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Finding the Fourth Proportional to 85,362.80, 127,871.40 and 59,097.20

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Solution

The fourth proportional to 85,362.80, 127,871.40 and 59,097.20 is: 88,526.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,362.80 : 127,871.40 = 59,097.20 : x
  2. Step 2: Convert to fraction form
    85,362.80/127,871.40 = 59,097.20/x
  3. Step 3: Cross multiply
    85,362.80x = 127,871.40 × 59,097.20
  4. Step 4: Simplify right side
    85,362.80x = 7,556,841,700.08
  5. Step 5: Solve for x
    x = 7,556,841,700.08/85,362.80
  6. Step 6: Final answer
    x = 88,526.17

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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.