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Finding the Fourth Proportional to 153,329.01, 211,592.39 and 85,344.90

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Solution

The fourth proportional to 153,329.01, 211,592.39 and 85,344.90 is: 117,775.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,329.01 : 211,592.39 = 85,344.90 : x
  2. Step 2: Convert to fraction form
    153,329.01/211,592.39 = 85,344.90/x
  3. Step 3: Cross multiply
    153,329.01x = 211,592.39 × 85,344.90
  4. Step 4: Simplify right side
    153,329.01x = 18,058,330,938.59
  5. Step 5: Solve for x
    x = 18,058,330,938.59/153,329.01
  6. Step 6: Final answer
    x = 117,775.04

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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.