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Finding the Fourth Proportional to 113,119.60, 169,679.40 and 65,880.40

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Solution

The fourth proportional to 113,119.60, 169,679.40 and 65,880.40 is: 98,820.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,119.60 : 169,679.40 = 65,880.40 : x
  2. Step 2: Convert to fraction form
    113,119.60/169,679.40 = 65,880.40/x
  3. Step 3: Cross multiply
    113,119.60x = 169,679.40 × 65,880.40
  4. Step 4: Simplify right side
    113,119.60x = 11,178,546,743.76
  5. Step 5: Solve for x
    x = 11,178,546,743.76/113,119.60
  6. Step 6: Final answer
    x = 98,820.60

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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.