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Finding the Fourth Proportional to 25,646.60, 38,469.90 and 15,848.20

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Solution

The fourth proportional to 25,646.60, 38,469.90 and 15,848.20 is: 23,772.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,646.60 : 38,469.90 = 15,848.20 : x
  2. Step 2: Convert to fraction form
    25,646.60/38,469.90 = 15,848.20/x
  3. Step 3: Cross multiply
    25,646.60x = 38,469.90 × 15,848.20
  4. Step 4: Simplify right side
    25,646.60x = 609,678,669.18
  5. Step 5: Solve for x
    x = 609,678,669.18/25,646.60
  6. Step 6: Final answer
    x = 23,772.30

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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.