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Finding the Fourth Proportional to 620,621.40, 930,932.10 and 496,205.40

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Solution

The fourth proportional to 620,621.40, 930,932.10 and 496,205.40 is: 744,308.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,621.40 : 930,932.10 = 496,205.40 : x
  2. Step 2: Convert to fraction form
    620,621.40/930,932.10 = 496,205.40/x
  3. Step 3: Cross multiply
    620,621.40x = 930,932.10 × 496,205.40
  4. Step 4: Simplify right side
    620,621.40x = 461,933,535,053.34
  5. Step 5: Solve for x
    x = 461,933,535,053.34/620,621.40
  6. Step 6: Final answer
    x = 744,308.10

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Double scale
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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.