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Finding the Fourth Proportional to 135,925.71, 203,888.57 and 42,439.47

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Solution

The fourth proportional to 135,925.71, 203,888.57 and 42,439.47 is: 63,659.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,925.71 : 203,888.57 = 42,439.47 : x
  2. Step 2: Convert to fraction form
    135,925.71/203,888.57 = 42,439.47/x
  3. Step 3: Cross multiply
    135,925.71x = 203,888.57 × 42,439.47
  4. Step 4: Simplify right side
    135,925.71x = 8,652,922,637.66
  5. Step 5: Solve for x
    x = 8,652,922,637.66/135,925.71
  6. Step 6: Final answer
    x = 63,659.21

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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.