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Finding the Fourth Proportional to 78,792, 108,742.07 and 43,870.16

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Solution

The fourth proportional to 78,792, 108,742.07 and 43,870.16 is: 60,545.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,792 : 108,742.07 = 43,870.16 : x
  2. Step 2: Convert to fraction form
    78,792/108,742.07 = 43,870.16/x
  3. Step 3: Cross multiply
    78,792x = 108,742.07 × 43,870.16
  4. Step 4: Simplify right side
    78,792x = 4,770,532,062.14
  5. Step 5: Solve for x
    x = 4,770,532,062.14/78,792
  6. Step 6: Final answer
    x = 60,545.89

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.