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Finding the Fourth Proportional to 128,222.01, 176,934.44 and 74,506.25

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Solution

The fourth proportional to 128,222.01, 176,934.44 and 74,506.25 is: 102,811.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,222.01 : 176,934.44 = 74,506.25 : x
  2. Step 2: Convert to fraction form
    128,222.01/176,934.44 = 74,506.25/x
  3. Step 3: Cross multiply
    128,222.01x = 176,934.44 × 74,506.25
  4. Step 4: Simplify right side
    128,222.01x = 13,182,722,248.85
  5. Step 5: Solve for x
    x = 13,182,722,248.85/128,222.01
  6. Step 6: Final answer
    x = 102,811.70

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.