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Finding the Fourth Proportional to 113,483.60, 169,933.80 and 83,740.40

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Solution

The fourth proportional to 113,483.60, 169,933.80 and 83,740.40 is: 125,395.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,483.60 : 169,933.80 = 83,740.40 : x
  2. Step 2: Convert to fraction form
    113,483.60/169,933.80 = 83,740.40/x
  3. Step 3: Cross multiply
    113,483.60x = 169,933.80 × 83,740.40
  4. Step 4: Simplify right side
    113,483.60x = 14,230,324,385.52
  5. Step 5: Solve for x
    x = 14,230,324,385.52/113,483.60
  6. Step 6: Final answer
    x = 125,395.43

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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.