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Finding the Fourth Proportional to 173,965.28, 260,980.72 and 99,169.88

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Solution

The fourth proportional to 173,965.28, 260,980.72 and 99,169.88 is: 148,773.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,965.28 : 260,980.72 = 99,169.88 : x
  2. Step 2: Convert to fraction form
    173,965.28/260,980.72 = 99,169.88/x
  3. Step 3: Cross multiply
    173,965.28x = 260,980.72 × 99,169.88
  4. Step 4: Simplify right side
    173,965.28x = 25,881,426,684.71
  5. Step 5: Solve for x
    x = 25,881,426,684.71/173,965.28
  6. Step 6: Final answer
    x = 148,773.52

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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.