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Finding the Fourth Proportional to 438,121.76, 657,182.76 and 185,336.72

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Solution

The fourth proportional to 438,121.76, 657,182.76 and 185,336.72 is: 278,005.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,121.76 : 657,182.76 = 185,336.72 : x
  2. Step 2: Convert to fraction form
    438,121.76/657,182.76 = 185,336.72/x
  3. Step 3: Cross multiply
    438,121.76x = 657,182.76 × 185,336.72
  4. Step 4: Simplify right side
    438,121.76x = 121,800,097,178.95
  5. Step 5: Solve for x
    x = 121,800,097,178.95/438,121.76
  6. Step 6: Final answer
    x = 278,005.13

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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.