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Finding the Fourth Proportional to 58,986.38, 81,398.40 and 32,128.76

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Solution

The fourth proportional to 58,986.38, 81,398.40 and 32,128.76 is: 44,336.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,986.38 : 81,398.40 = 32,128.76 : x
  2. Step 2: Convert to fraction form
    58,986.38/81,398.40 = 32,128.76/x
  3. Step 3: Cross multiply
    58,986.38x = 81,398.40 × 32,128.76
  4. Step 4: Simplify right side
    58,986.38x = 2,615,229,657.98
  5. Step 5: Solve for x
    x = 2,615,229,657.98/58,986.38
  6. Step 6: Final answer
    x = 44,336.16

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1.5x scale

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.