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Finding the Fourth Proportional to 176,143.50, 243,078.12 and 100,693.62

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Solution

The fourth proportional to 176,143.50, 243,078.12 and 100,693.62 is: 138,957.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,143.50 : 243,078.12 = 100,693.62 : x
  2. Step 2: Convert to fraction form
    176,143.50/243,078.12 = 100,693.62/x
  3. Step 3: Cross multiply
    176,143.50x = 243,078.12 × 100,693.62
  4. Step 4: Simplify right side
    176,143.50x = 24,476,415,845.59
  5. Step 5: Solve for x
    x = 24,476,415,845.59/176,143.50
  6. Step 6: Final answer
    x = 138,957.25

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1.5x scale

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.