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Finding the Fourth Proportional to 45,478.60, 68,201.70 and 15,897.40

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Solution

The fourth proportional to 45,478.60, 68,201.70 and 15,897.40 is: 23,840.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,478.60 : 68,201.70 = 15,897.40 : x
  2. Step 2: Convert to fraction form
    45,478.60/68,201.70 = 15,897.40/x
  3. Step 3: Cross multiply
    45,478.60x = 68,201.70 × 15,897.40
  4. Step 4: Simplify right side
    45,478.60x = 1,084,229,705.58
  5. Step 5: Solve for x
    x = 1,084,229,705.58/45,478.60
  6. Step 6: Final answer
    x = 23,840.44

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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.