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Finding the Fourth Proportional to 220,864.40, 331,642.20 and 127,552.40

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Solution

The fourth proportional to 220,864.40, 331,642.20 and 127,552.40 is: 191,528.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,864.40 : 331,642.20 = 127,552.40 : x
  2. Step 2: Convert to fraction form
    220,864.40/331,642.20 = 127,552.40/x
  3. Step 3: Cross multiply
    220,864.40x = 331,642.20 × 127,552.40
  4. Step 4: Simplify right side
    220,864.40x = 42,301,758,551.28
  5. Step 5: Solve for x
    x = 42,301,758,551.28/220,864.40
  6. Step 6: Final answer
    x = 191,528.19

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1.5x scale

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.