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Finding the Fourth Proportional to 111,070.64, 153,281.31 and 60,769.64

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Solution

The fourth proportional to 111,070.64, 153,281.31 and 60,769.64 is: 83,864.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,070.64 : 153,281.31 = 60,769.64 : x
  2. Step 2: Convert to fraction form
    111,070.64/153,281.31 = 60,769.64/x
  3. Step 3: Cross multiply
    111,070.64x = 153,281.31 × 60,769.64
  4. Step 4: Simplify right side
    111,070.64x = 9,314,850,027.43
  5. Step 5: Solve for x
    x = 9,314,850,027.43/111,070.64
  6. Step 6: Final answer
    x = 83,864.20

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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.