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Finding the Fourth Proportional to 62,148.64, 86,360.92 and 61,509.28

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Solution

The fourth proportional to 62,148.64, 86,360.92 and 61,509.28 is: 85,472.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,148.64 : 86,360.92 = 61,509.28 : x
  2. Step 2: Convert to fraction form
    62,148.64/86,360.92 = 61,509.28/x
  3. Step 3: Cross multiply
    62,148.64x = 86,360.92 × 61,509.28
  4. Step 4: Simplify right side
    62,148.64x = 5,311,998,009.34
  5. Step 5: Solve for x
    x = 5,311,998,009.34/62,148.64
  6. Step 6: Final answer
    x = 85,472.47

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.