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Finding the Fourth Proportional to 256,392.39, 353,890.41 and 147,509.19

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Solution

The fourth proportional to 256,392.39, 353,890.41 and 147,509.19 is: 203,602.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,392.39 : 353,890.41 = 147,509.19 : x
  2. Step 2: Convert to fraction form
    256,392.39/353,890.41 = 147,509.19/x
  3. Step 3: Cross multiply
    256,392.39x = 353,890.41 × 147,509.19
  4. Step 4: Simplify right side
    256,392.39x = 52,202,087,727.87
  5. Step 5: Solve for x
    x = 52,202,087,727.87/256,392.39
  6. Step 6: Final answer
    x = 203,602.33

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1.5x scale

Why These Related Problems?

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