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Finding the Fourth Proportional to 153,634.52, 212,016.49 and 85,655.75

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Solution

The fourth proportional to 153,634.52, 212,016.49 and 85,655.75 is: 118,205.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,634.52 : 212,016.49 = 85,655.75 : x
  2. Step 2: Convert to fraction form
    153,634.52/212,016.49 = 85,655.75/x
  3. Step 3: Cross multiply
    153,634.52x = 212,016.49 × 85,655.75
  4. Step 4: Simplify right side
    153,634.52x = 18,160,430,189.10
  5. Step 5: Solve for x
    x = 18,160,430,189.10/153,634.52
  6. Step 6: Final answer
    x = 118,205.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.