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Finding the Fourth Proportional to 60,432.80, 90,746.40 and 43,908.80

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Solution

The fourth proportional to 60,432.80, 90,746.40 and 43,908.80 is: 65,933.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,432.80 : 90,746.40 = 43,908.80 : x
  2. Step 2: Convert to fraction form
    60,432.80/90,746.40 = 43,908.80/x
  3. Step 3: Cross multiply
    60,432.80x = 90,746.40 × 43,908.80
  4. Step 4: Simplify right side
    60,432.80x = 3,984,565,528.32
  5. Step 5: Solve for x
    x = 3,984,565,528.32/60,432.80
  6. Step 6: Final answer
    x = 65,933.82

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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.