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Finding the Fourth Proportional to 70,681.10, 106,010.51 and 58,749.87

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Solution

The fourth proportional to 70,681.10, 106,010.51 and 58,749.87 is: 88,115.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,681.10 : 106,010.51 = 58,749.87 : x
  2. Step 2: Convert to fraction form
    70,681.10/106,010.51 = 58,749.87/x
  3. Step 3: Cross multiply
    70,681.10x = 106,010.51 × 58,749.87
  4. Step 4: Simplify right side
    70,681.10x = 6,228,103,681.13
  5. Step 5: Solve for x
    x = 6,228,103,681.13/70,681.10
  6. Step 6: Final answer
    x = 88,115.55

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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.