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Finding the Fourth Proportional to 279,998.92, 386,390.08 and 152,677

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Solution

The fourth proportional to 279,998.92, 386,390.08 and 152,677 is: 210,689.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,998.92 : 386,390.08 = 152,677 : x
  2. Step 2: Convert to fraction form
    279,998.92/386,390.08 = 152,677/x
  3. Step 3: Cross multiply
    279,998.92x = 386,390.08 × 152,677
  4. Step 4: Simplify right side
    279,998.92x = 58,992,878,244.16
  5. Step 5: Solve for x
    x = 58,992,878,244.16/279,998.92
  6. Step 6: Final answer
    x = 210,689.66

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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.