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Finding the Fourth Proportional to 285,407.60, 393,862.48 and 158,091.39

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Solution

The fourth proportional to 285,407.60, 393,862.48 and 158,091.39 is: 218,166.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,407.60 : 393,862.48 = 158,091.39 : x
  2. Step 2: Convert to fraction form
    285,407.60/393,862.48 = 158,091.39/x
  3. Step 3: Cross multiply
    285,407.60x = 393,862.48 × 158,091.39
  4. Step 4: Simplify right side
    285,407.60x = 62,266,267,521.47
  5. Step 5: Solve for x
    x = 62,266,267,521.47/285,407.60
  6. Step 6: Final answer
    x = 218,166.12

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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.