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Finding the Fourth Proportional to 919,651.60, 1,379,477.40 and 254,803.60

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Solution

The fourth proportional to 919,651.60, 1,379,477.40 and 254,803.60 is: 382,205.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,651.60 : 1,379,477.40 = 254,803.60 : x
  2. Step 2: Convert to fraction form
    919,651.60/1,379,477.40 = 254,803.60/x
  3. Step 3: Cross multiply
    919,651.60x = 1,379,477.40 × 254,803.60
  4. Step 4: Simplify right side
    919,651.60x = 351,495,807,638.64
  5. Step 5: Solve for x
    x = 351,495,807,638.64/919,651.60
  6. Step 6: Final answer
    x = 382,205.40

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Half scale
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Double scale
Find fourth proportional to 919,652.60, 1,379,478.90 and 254,804.60
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.