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Finding the Fourth Proportional to 75,700.76, 104,471.72 and 42,166.76

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Solution

The fourth proportional to 75,700.76, 104,471.72 and 42,166.76 is: 58,192.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,700.76 : 104,471.72 = 42,166.76 : x
  2. Step 2: Convert to fraction form
    75,700.76/104,471.72 = 42,166.76/x
  3. Step 3: Cross multiply
    75,700.76x = 104,471.72 × 42,166.76
  4. Step 4: Simplify right side
    75,700.76x = 4,405,233,210.83
  5. Step 5: Solve for x
    x = 4,405,233,210.83/75,700.76
  6. Step 6: Final answer
    x = 58,192.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.