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Finding the Fourth Proportional to 386,770.68, 533,752.74 and 217,017.36

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Solution

The fourth proportional to 386,770.68, 533,752.74 and 217,017.36 is: 299,489.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,770.68 : 533,752.74 = 217,017.36 : x
  2. Step 2: Convert to fraction form
    386,770.68/533,752.74 = 217,017.36/x
  3. Step 3: Cross multiply
    386,770.68x = 533,752.74 × 217,017.36
  4. Step 4: Simplify right side
    386,770.68x = 115,833,610,527.57
  5. Step 5: Solve for x
    x = 115,833,610,527.57/386,770.68
  6. Step 6: Final answer
    x = 299,489.12

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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.