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Finding the Fourth Proportional to 171,657.20, 236,862.96 and 99,081.20

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Solution

The fourth proportional to 171,657.20, 236,862.96 and 99,081.20 is: 136,718.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,657.20 : 236,862.96 = 99,081.20 : x
  2. Step 2: Convert to fraction form
    171,657.20/236,862.96 = 99,081.20/x
  3. Step 3: Cross multiply
    171,657.20x = 236,862.96 × 99,081.20
  4. Step 4: Simplify right side
    171,657.20x = 23,468,666,312.35
  5. Step 5: Solve for x
    x = 23,468,666,312.35/171,657.20
  6. Step 6: Final answer
    x = 136,718.22

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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.