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Finding the Fourth Proportional to 265,925.13, 398,961.51 and 147,679.51

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Solution

The fourth proportional to 265,925.13, 398,961.51 and 147,679.51 is: 221,560.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,925.13 : 398,961.51 = 147,679.51 : x
  2. Step 2: Convert to fraction form
    265,925.13/398,961.51 = 147,679.51/x
  3. Step 3: Cross multiply
    265,925.13x = 398,961.51 × 147,679.51
  4. Step 4: Simplify right side
    265,925.13x = 58,918,438,310.85
  5. Step 5: Solve for x
    x = 58,918,438,310.85/265,925.13
  6. Step 6: Final answer
    x = 221,560.25

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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.