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Finding the Fourth Proportional to 72,703.70, 109,059.15 and 37,711.70

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Solution

The fourth proportional to 72,703.70, 109,059.15 and 37,711.70 is: 56,569.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,703.70 : 109,059.15 = 37,711.70 : x
  2. Step 2: Convert to fraction form
    72,703.70/109,059.15 = 37,711.70/x
  3. Step 3: Cross multiply
    72,703.70x = 109,059.15 × 37,711.70
  4. Step 4: Simplify right side
    72,703.70x = 4,112,805,947.06
  5. Step 5: Solve for x
    x = 4,112,805,947.06/72,703.70
  6. Step 6: Final answer
    x = 56,569.42

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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.