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Finding the Fourth Proportional to 110,335.40, 165,308.70 and 90,506.60

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Solution

The fourth proportional to 110,335.40, 165,308.70 and 90,506.60 is: 135,600.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,335.40 : 165,308.70 = 90,506.60 : x
  2. Step 2: Convert to fraction form
    110,335.40/165,308.70 = 90,506.60/x
  3. Step 3: Cross multiply
    110,335.40x = 165,308.70 × 90,506.60
  4. Step 4: Simplify right side
    110,335.40x = 14,961,528,387.42
  5. Step 5: Solve for x
    x = 14,961,528,387.42/110,335.40
  6. Step 6: Final answer
    x = 135,600.44

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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.