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Finding the Fourth Proportional to 31,522.80, 47,284.20 and 25,885.20

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Solution

The fourth proportional to 31,522.80, 47,284.20 and 25,885.20 is: 38,827.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,522.80 : 47,284.20 = 25,885.20 : x
  2. Step 2: Convert to fraction form
    31,522.80/47,284.20 = 25,885.20/x
  3. Step 3: Cross multiply
    31,522.80x = 47,284.20 × 25,885.20
  4. Step 4: Simplify right side
    31,522.80x = 1,223,960,973.84
  5. Step 5: Solve for x
    x = 1,223,960,973.84/31,522.80
  6. Step 6: Final answer
    x = 38,827.80

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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.