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Finding the Fourth Proportional to 136,726.20, 205,089.30 and 124,260.30

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Solution

The fourth proportional to 136,726.20, 205,089.30 and 124,260.30 is: 186,390.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,726.20 : 205,089.30 = 124,260.30 : x
  2. Step 2: Convert to fraction form
    136,726.20/205,089.30 = 124,260.30/x
  3. Step 3: Cross multiply
    136,726.20x = 205,089.30 × 124,260.30
  4. Step 4: Simplify right side
    136,726.20x = 25,484,457,944.79
  5. Step 5: Solve for x
    x = 25,484,457,944.79/136,726.20
  6. Step 6: Final answer
    x = 186,390.45

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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.