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Finding the Fourth Proportional to 86,169.60, 129,254.16 and 27,005.52

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Solution

The fourth proportional to 86,169.60, 129,254.16 and 27,005.52 is: 40,508.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,169.60 : 129,254.16 = 27,005.52 : x
  2. Step 2: Convert to fraction form
    86,169.60/129,254.16 = 27,005.52/x
  3. Step 3: Cross multiply
    86,169.60x = 129,254.16 × 27,005.52
  4. Step 4: Simplify right side
    86,169.60x = 3,490,575,802.96
  5. Step 5: Solve for x
    x = 3,490,575,802.96/86,169.60
  6. Step 6: Final answer
    x = 40,508.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.