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Finding the Fourth Proportional to 621,807.70, 932,711.55 and 222,479.80

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Solution

The fourth proportional to 621,807.70, 932,711.55 and 222,479.80 is: 333,719.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,807.70 : 932,711.55 = 222,479.80 : x
  2. Step 2: Convert to fraction form
    621,807.70/932,711.55 = 222,479.80/x
  3. Step 3: Cross multiply
    621,807.70x = 932,711.55 × 222,479.80
  4. Step 4: Simplify right side
    621,807.70x = 207,509,479,101.69
  5. Step 5: Solve for x
    x = 207,509,479,101.69/621,807.70
  6. Step 6: Final answer
    x = 333,719.70

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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.