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Finding the Fourth Proportional to 60,436.88, 90,211.69 and 55,983.61

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Solution

The fourth proportional to 60,436.88, 90,211.69 and 55,983.61 is: 83,564.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,436.88 : 90,211.69 = 55,983.61 : x
  2. Step 2: Convert to fraction form
    60,436.88/90,211.69 = 55,983.61/x
  3. Step 3: Cross multiply
    60,436.88x = 90,211.69 × 55,983.61
  4. Step 4: Simplify right side
    60,436.88x = 5,050,376,070.40
  5. Step 5: Solve for x
    x = 5,050,376,070.40/60,436.88
  6. Step 6: Final answer
    x = 83,564.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.