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Finding the Fourth Proportional to 86,987.92, 130,531.14 and 37,062.76

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Solution

The fourth proportional to 86,987.92, 130,531.14 and 37,062.76 is: 55,615.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,987.92 : 130,531.14 = 37,062.76 : x
  2. Step 2: Convert to fraction form
    86,987.92/130,531.14 = 37,062.76/x
  3. Step 3: Cross multiply
    86,987.92x = 130,531.14 × 37,062.76
  4. Step 4: Simplify right side
    86,987.92x = 4,837,844,314.35
  5. Step 5: Solve for x
    x = 4,837,844,314.35/86,987.92
  6. Step 6: Final answer
    x = 55,615.13

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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.