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Finding the Fourth Proportional to 169,904.95, 254,863.90 and 86,701.75

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Solution

The fourth proportional to 169,904.95, 254,863.90 and 86,701.75 is: 130,055.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,904.95 : 254,863.90 = 86,701.75 : x
  2. Step 2: Convert to fraction form
    169,904.95/254,863.90 = 86,701.75/x
  3. Step 3: Cross multiply
    169,904.95x = 254,863.90 × 86,701.75
  4. Step 4: Simplify right side
    169,904.95x = 22,097,144,650.75
  5. Step 5: Solve for x
    x = 22,097,144,650.75/169,904.95
  6. Step 6: Final answer
    x = 130,055.92

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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.