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Finding the Fourth Proportional to 157,983.66, 218,017.56 and 86,363.70

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Solution

The fourth proportional to 157,983.66, 218,017.56 and 86,363.70 is: 119,181.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,983.66 : 218,017.56 = 86,363.70 : x
  2. Step 2: Convert to fraction form
    157,983.66/218,017.56 = 86,363.70/x
  3. Step 3: Cross multiply
    157,983.66x = 218,017.56 × 86,363.70
  4. Step 4: Simplify right side
    157,983.66x = 18,828,803,146.57
  5. Step 5: Solve for x
    x = 18,828,803,146.57/157,983.66
  6. Step 6: Final answer
    x = 119,181.97

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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.