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Finding the Fourth Proportional to 368,470.70, 508,499.51 and 207,331.48

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Solution

The fourth proportional to 368,470.70, 508,499.51 and 207,331.48 is: 286,123.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,470.70 : 508,499.51 = 207,331.48 : x
  2. Step 2: Convert to fraction form
    368,470.70/508,499.51 = 207,331.48/x
  3. Step 3: Cross multiply
    368,470.70x = 508,499.51 × 207,331.48
  4. Step 4: Simplify right side
    368,470.70x = 105,427,957,141.53
  5. Step 5: Solve for x
    x = 105,427,957,141.53/368,470.70
  6. Step 6: Final answer
    x = 286,123.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.