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Finding the Fourth Proportional to 66,019.65, 91,087.92 and 43,056.15

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Solution

The fourth proportional to 66,019.65, 91,087.92 and 43,056.15 is: 59,404.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,019.65 : 91,087.92 = 43,056.15 : x
  2. Step 2: Convert to fraction form
    66,019.65/91,087.92 = 43,056.15/x
  3. Step 3: Cross multiply
    66,019.65x = 91,087.92 × 43,056.15
  4. Step 4: Simplify right side
    66,019.65x = 3,921,895,146.71
  5. Step 5: Solve for x
    x = 3,921,895,146.71/66,019.65
  6. Step 6: Final answer
    x = 59,404.97

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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.