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Finding the Fourth Proportional to 85,036.95, 127,573.87 and 25,871.08

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Solution

The fourth proportional to 85,036.95, 127,573.87 and 25,871.08 is: 38,812.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,036.95 : 127,573.87 = 25,871.08 : x
  2. Step 2: Convert to fraction form
    85,036.95/127,573.87 = 25,871.08/x
  3. Step 3: Cross multiply
    85,036.95x = 127,573.87 × 25,871.08
  4. Step 4: Simplify right side
    85,036.95x = 3,300,473,701.89
  5. Step 5: Solve for x
    x = 3,300,473,701.89/85,036.95
  6. Step 6: Final answer
    x = 38,812.23

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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.