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Finding the Fourth Proportional to 110,219.20, 165,328.80 and 65,982.40

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Solution

The fourth proportional to 110,219.20, 165,328.80 and 65,982.40 is: 98,973.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,219.20 : 165,328.80 = 65,982.40 : x
  2. Step 2: Convert to fraction form
    110,219.20/165,328.80 = 65,982.40/x
  3. Step 3: Cross multiply
    110,219.20x = 165,328.80 × 65,982.40
  4. Step 4: Simplify right side
    110,219.20x = 10,908,791,013.12
  5. Step 5: Solve for x
    x = 10,908,791,013.12/110,219.20
  6. Step 6: Final answer
    x = 98,973.60

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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.