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Finding the Fourth Proportional to 72,657.68, 108,871.39 and 56,058.35

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Solution

The fourth proportional to 72,657.68, 108,871.39 and 56,058.35 is: 83,998.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,657.68 : 108,871.39 = 56,058.35 : x
  2. Step 2: Convert to fraction form
    72,657.68/108,871.39 = 56,058.35/x
  3. Step 3: Cross multiply
    72,657.68x = 108,871.39 × 56,058.35
  4. Step 4: Simplify right side
    72,657.68x = 6,103,150,011.32
  5. Step 5: Solve for x
    x = 6,103,150,011.32/72,657.68
  6. Step 6: Final answer
    x = 83,998.70

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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.