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Finding the Fourth Proportional to 73,117.70, 109,806.15 and 56,518.10

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Solution

The fourth proportional to 73,117.70, 109,806.15 and 56,518.10 is: 84,877.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,117.70 : 109,806.15 = 56,518.10 : x
  2. Step 2: Convert to fraction form
    73,117.70/109,806.15 = 56,518.10/x
  3. Step 3: Cross multiply
    73,117.70x = 109,806.15 × 56,518.10
  4. Step 4: Simplify right side
    73,117.70x = 6,206,034,966.32
  5. Step 5: Solve for x
    x = 6,206,034,966.32/73,117.70
  6. Step 6: Final answer
    x = 84,877.33

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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.