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Finding the Fourth Proportional to 252,864.95, 348,963.65 and 145,434.84

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Solution

The fourth proportional to 252,864.95, 348,963.65 and 145,434.84 is: 200,705.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,864.95 : 348,963.65 = 145,434.84 : x
  2. Step 2: Convert to fraction form
    252,864.95/348,963.65 = 145,434.84/x
  3. Step 3: Cross multiply
    252,864.95x = 348,963.65 × 145,434.84
  4. Step 4: Simplify right side
    252,864.95x = 50,751,471,876.39
  5. Step 5: Solve for x
    x = 50,751,471,876.39/252,864.95
  6. Step 6: Final answer
    x = 200,705.84

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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.