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Finding the Fourth Proportional to 31,460.98, 47,220.64 and 15,889.54

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Solution

The fourth proportional to 31,460.98, 47,220.64 and 15,889.54 is: 23,849.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,460.98 : 47,220.64 = 15,889.54 : x
  2. Step 2: Convert to fraction form
    31,460.98/47,220.64 = 15,889.54/x
  3. Step 3: Cross multiply
    31,460.98x = 47,220.64 × 15,889.54
  4. Step 4: Simplify right side
    31,460.98x = 750,314,248.11
  5. Step 5: Solve for x
    x = 750,314,248.11/31,460.98
  6. Step 6: Final answer
    x = 23,849.04

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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.