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Finding the Fourth Proportional to 158,545.26, 218,792.46 and 86,925.78

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Solution

The fourth proportional to 158,545.26, 218,792.46 and 86,925.78 is: 119,957.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,545.26 : 218,792.46 = 86,925.78 : x
  2. Step 2: Convert to fraction form
    158,545.26/218,792.46 = 86,925.78/x
  3. Step 3: Cross multiply
    158,545.26x = 218,792.46 × 86,925.78
  4. Step 4: Simplify right side
    158,545.26x = 19,018,705,243.62
  5. Step 5: Solve for x
    x = 19,018,705,243.62/158,545.26
  6. Step 6: Final answer
    x = 119,957.58

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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.