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Finding the Fourth Proportional to 58,514.56, 87,800.64 and 28,931.20

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Solution

The fourth proportional to 58,514.56, 87,800.64 and 28,931.20 is: 43,411.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,514.56 : 87,800.64 = 28,931.20 : x
  2. Step 2: Convert to fraction form
    58,514.56/87,800.64 = 28,931.20/x
  3. Step 3: Cross multiply
    58,514.56x = 87,800.64 × 28,931.20
  4. Step 4: Simplify right side
    58,514.56x = 2,540,177,875.97
  5. Step 5: Solve for x
    x = 2,540,177,875.97/58,514.56
  6. Step 6: Final answer
    x = 43,411.04

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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.