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Finding the Fourth Proportional to 99,259.16, 136,978.20 and 53,937.52

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Solution

The fourth proportional to 99,259.16, 136,978.20 and 53,937.52 is: 74,434.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,259.16 : 136,978.20 = 53,937.52 : x
  2. Step 2: Convert to fraction form
    99,259.16/136,978.20 = 53,937.52/x
  3. Step 3: Cross multiply
    99,259.16x = 136,978.20 × 53,937.52
  4. Step 4: Simplify right side
    99,259.16x = 7,388,264,402.06
  5. Step 5: Solve for x
    x = 7,388,264,402.06/99,259.16
  6. Step 6: Final answer
    x = 74,434.08

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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.