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Finding the Fourth Proportional to 621,807.60, 932,711.40 and 172,527.60

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Solution

The fourth proportional to 621,807.60, 932,711.40 and 172,527.60 is: 258,791.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,807.60 : 932,711.40 = 172,527.60 : x
  2. Step 2: Convert to fraction form
    621,807.60/932,711.40 = 172,527.60/x
  3. Step 3: Cross multiply
    621,807.60x = 932,711.40 × 172,527.60
  4. Step 4: Simplify right side
    621,807.60x = 160,918,459,334.64
  5. Step 5: Solve for x
    x = 160,918,459,334.64/621,807.60
  6. Step 6: Final answer
    x = 258,791.40

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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.