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Finding the Fourth Proportional to 15,862.20, 22,237.80 and 15,862.20

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Solution

The fourth proportional to 15,862.20, 22,237.80 and 15,862.20 is: 22,237.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,862.20 : 22,237.80 = 15,862.20 : x
  2. Step 2: Convert to fraction form
    15,862.20/22,237.80 = 15,862.20/x
  3. Step 3: Cross multiply
    15,862.20x = 22,237.80 × 15,862.20
  4. Step 4: Simplify right side
    15,862.20x = 352,740,431.16
  5. Step 5: Solve for x
    x = 352,740,431.16/15,862.20
  6. Step 6: Final answer
    x = 22,237.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.