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Finding the Fourth Proportional to 15,862.53, 23,780.40 and 7,955.31

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Solution

The fourth proportional to 15,862.53, 23,780.40 and 7,955.31 is: 11,926.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,862.53 : 23,780.40 = 7,955.31 : x
  2. Step 2: Convert to fraction form
    15,862.53/23,780.40 = 7,955.31/x
  3. Step 3: Cross multiply
    15,862.53x = 23,780.40 × 7,955.31
  4. Step 4: Simplify right side
    15,862.53x = 189,180,453.92
  5. Step 5: Solve for x
    x = 189,180,453.92/15,862.53
  6. Step 6: Final answer
    x = 11,926.25

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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.