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Finding the Fourth Proportional to 665,193.60, 997,790.40 and 452,617.20

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Solution

The fourth proportional to 665,193.60, 997,790.40 and 452,617.20 is: 678,925.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,193.60 : 997,790.40 = 452,617.20 : x
  2. Step 2: Convert to fraction form
    665,193.60/997,790.40 = 452,617.20/x
  3. Step 3: Cross multiply
    665,193.60x = 997,790.40 × 452,617.20
  4. Step 4: Simplify right side
    665,193.60x = 451,617,097,034.88
  5. Step 5: Solve for x
    x = 451,617,097,034.88/665,193.60
  6. Step 6: Final answer
    x = 678,925.80

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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.