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Finding the Fourth Proportional to 235,691.10, 325,253.10 and 128,261.10

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Solution

The fourth proportional to 235,691.10, 325,253.10 and 128,261.10 is: 176,999.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,691.10 : 325,253.10 = 128,261.10 : x
  2. Step 2: Convert to fraction form
    235,691.10/325,253.10 = 128,261.10/x
  3. Step 3: Cross multiply
    235,691.10x = 325,253.10 × 128,261.10
  4. Step 4: Simplify right side
    235,691.10x = 41,717,320,384.41
  5. Step 5: Solve for x
    x = 41,717,320,384.41/235,691.10
  6. Step 6: Final answer
    x = 176,999.98

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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.