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Finding the Fourth Proportional to 621,810.60, 932,715.90 and 574,117.80

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Solution

The fourth proportional to 621,810.60, 932,715.90 and 574,117.80 is: 861,176.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,810.60 : 932,715.90 = 574,117.80 : x
  2. Step 2: Convert to fraction form
    621,810.60/932,715.90 = 574,117.80/x
  3. Step 3: Cross multiply
    621,810.60x = 932,715.90 × 574,117.80
  4. Step 4: Simplify right side
    621,810.60x = 535,488,800,533.02
  5. Step 5: Solve for x
    x = 535,488,800,533.02/621,810.60
  6. Step 6: Final answer
    x = 861,176.70

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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.