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Finding the Fourth Proportional to 58,986.47, 81,401.45 and 32,128.90

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Solution

The fourth proportional to 58,986.47, 81,401.45 and 32,128.90 is: 44,337.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,986.47 : 81,401.45 = 32,128.90 : x
  2. Step 2: Convert to fraction form
    58,986.47/81,401.45 = 32,128.90/x
  3. Step 3: Cross multiply
    58,986.47x = 81,401.45 × 32,128.90
  4. Step 4: Simplify right side
    58,986.47x = 2,615,338,682.76
  5. Step 5: Solve for x
    x = 2,615,338,682.76/58,986.47
  6. Step 6: Final answer
    x = 44,337.94

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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.