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Finding the Fourth Proportional to 111,700.90, 154,095.87 and 98,967.07

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Solution

The fourth proportional to 111,700.90, 154,095.87 and 98,967.07 is: 136,529.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,700.90 : 154,095.87 = 98,967.07 : x
  2. Step 2: Convert to fraction form
    111,700.90/154,095.87 = 98,967.07/x
  3. Step 3: Cross multiply
    111,700.90x = 154,095.87 × 98,967.07
  4. Step 4: Simplify right side
    111,700.90x = 15,250,416,753.00
  5. Step 5: Solve for x
    x = 15,250,416,753.00/111,700.90
  6. Step 6: Final answer
    x = 136,529.04

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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.