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Finding the Fourth Proportional to 153,173.78, 211,348.52 and 89,499.27

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Solution

The fourth proportional to 153,173.78, 211,348.52 and 89,499.27 is: 123,490.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,173.78 : 211,348.52 = 89,499.27 : x
  2. Step 2: Convert to fraction form
    153,173.78/211,348.52 = 89,499.27/x
  3. Step 3: Cross multiply
    153,173.78x = 211,348.52 × 89,499.27
  4. Step 4: Simplify right side
    153,173.78x = 18,915,538,255.58
  5. Step 5: Solve for x
    x = 18,915,538,255.58/153,173.78
  6. Step 6: Final answer
    x = 123,490.71

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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.