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Finding the Fourth Proportional to 217,422.90, 325,615.95 and 217,422.90

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Solution

The fourth proportional to 217,422.90, 325,615.95 and 217,422.90 is: 325,615.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,422.90 : 325,615.95 = 217,422.90 : x
  2. Step 2: Convert to fraction form
    217,422.90/325,615.95 = 217,422.90/x
  3. Step 3: Cross multiply
    217,422.90x = 325,615.95 × 217,422.90
  4. Step 4: Simplify right side
    217,422.90x = 70,796,364,135.26
  5. Step 5: Solve for x
    x = 70,796,364,135.26/217,422.90
  6. Step 6: Final answer
    x = 325,615.95

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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.