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Finding the Fourth Proportional to 69,319.72, 95,670.66 and 42,463.72

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Solution

The fourth proportional to 69,319.72, 95,670.66 and 42,463.72 is: 58,605.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,319.72 : 95,670.66 = 42,463.72 : x
  2. Step 2: Convert to fraction form
    69,319.72/95,670.66 = 42,463.72/x
  3. Step 3: Cross multiply
    69,319.72x = 95,670.66 × 42,463.72
  4. Step 4: Simplify right side
    69,319.72x = 4,062,532,118.46
  5. Step 5: Solve for x
    x = 4,062,532,118.46/69,319.72
  6. Step 6: Final answer
    x = 58,605.72

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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.