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Finding the Fourth Proportional to 58,908.80, 81,280.80 and 43,001.92

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Solution

The fourth proportional to 58,908.80, 81,280.80 and 43,001.92 is: 59,332.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,908.80 : 81,280.80 = 43,001.92 : x
  2. Step 2: Convert to fraction form
    58,908.80/81,280.80 = 43,001.92/x
  3. Step 3: Cross multiply
    58,908.80x = 81,280.80 × 43,001.92
  4. Step 4: Simplify right side
    58,908.80x = 3,495,230,459.14
  5. Step 5: Solve for x
    x = 3,495,230,459.14/58,908.80
  6. Step 6: Final answer
    x = 59,332.91

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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.