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Finding the Fourth Proportional to 99,251.16, 136,967.16 and 53,929.50

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Solution

The fourth proportional to 99,251.16, 136,967.16 and 53,929.50 is: 74,423.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,251.16 : 136,967.16 = 53,929.50 : x
  2. Step 2: Convert to fraction form
    99,251.16/136,967.16 = 53,929.50/x
  3. Step 3: Cross multiply
    99,251.16x = 136,967.16 × 53,929.50
  4. Step 4: Simplify right side
    99,251.16x = 7,386,570,455.22
  5. Step 5: Solve for x
    x = 7,386,570,455.22/99,251.16
  6. Step 6: Final answer
    x = 74,423.01

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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.