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Finding the Fourth Proportional to 113,627.60, 170,461.20 and 47,031.20

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Solution

The fourth proportional to 113,627.60, 170,461.20 and 47,031.20 is: 70,555.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,627.60 : 170,461.20 = 47,031.20 : x
  2. Step 2: Convert to fraction form
    113,627.60/170,461.20 = 47,031.20/x
  3. Step 3: Cross multiply
    113,627.60x = 170,461.20 × 47,031.20
  4. Step 4: Simplify right side
    113,627.60x = 8,016,994,789.44
  5. Step 5: Solve for x
    x = 8,016,994,789.44/113,627.60
  6. Step 6: Final answer
    x = 70,555.00

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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.