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Finding the Fourth Proportional to 114,580.80, 172,000.80 and 61,963.20

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Solution

The fourth proportional to 114,580.80, 172,000.80 and 61,963.20 is: 93,014.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,580.80 : 172,000.80 = 61,963.20 : x
  2. Step 2: Convert to fraction form
    114,580.80/172,000.80 = 61,963.20/x
  3. Step 3: Cross multiply
    114,580.80x = 172,000.80 × 61,963.20
  4. Step 4: Simplify right side
    114,580.80x = 10,657,719,970.56
  5. Step 5: Solve for x
    x = 10,657,719,970.56/114,580.80
  6. Step 6: Final answer
    x = 93,014.89

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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.