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Finding the Fourth Proportional to 292,700.52, 439,043.76 and 134,928.90

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Solution

The fourth proportional to 292,700.52, 439,043.76 and 134,928.90 is: 202,390.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,700.52 : 439,043.76 = 134,928.90 : x
  2. Step 2: Convert to fraction form
    292,700.52/439,043.76 = 134,928.90/x
  3. Step 3: Cross multiply
    292,700.52x = 439,043.76 × 134,928.90
  4. Step 4: Simplify right side
    292,700.52x = 59,239,691,588.66
  5. Step 5: Solve for x
    x = 59,239,691,588.66/292,700.52
  6. Step 6: Final answer
    x = 202,390.11

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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.