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Finding the Fourth Proportional to 58,031.60, 87,128.40 and 37,101.20

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Solution

The fourth proportional to 58,031.60, 87,128.40 and 37,101.20 is: 55,703.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,031.60 : 87,128.40 = 37,101.20 : x
  2. Step 2: Convert to fraction form
    58,031.60/87,128.40 = 37,101.20/x
  3. Step 3: Cross multiply
    58,031.60x = 87,128.40 × 37,101.20
  4. Step 4: Simplify right side
    58,031.60x = 3,232,568,194.08
  5. Step 5: Solve for x
    x = 3,232,568,194.08/58,031.60
  6. Step 6: Final answer
    x = 55,703.59

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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.