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Finding the Fourth Proportional to 292,471.70, 438,051.45 and 239,983.70

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Solution

The fourth proportional to 292,471.70, 438,051.45 and 239,983.70 is: 359,437.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,471.70 : 438,051.45 = 239,983.70 : x
  2. Step 2: Convert to fraction form
    292,471.70/438,051.45 = 239,983.70/x
  3. Step 3: Cross multiply
    292,471.70x = 438,051.45 × 239,983.70
  4. Step 4: Simplify right side
    292,471.70x = 105,125,207,761.37
  5. Step 5: Solve for x
    x = 105,125,207,761.37/292,471.70
  6. Step 6: Final answer
    x = 359,437.20

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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.