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Finding the Fourth Proportional to 153,001.67, 211,138.10 and 85,016.88

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Solution

The fourth proportional to 153,001.67, 211,138.10 and 85,016.88 is: 117,320.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,001.67 : 211,138.10 = 85,016.88 : x
  2. Step 2: Convert to fraction form
    153,001.67/211,138.10 = 85,016.88/x
  3. Step 3: Cross multiply
    153,001.67x = 211,138.10 × 85,016.88
  4. Step 4: Simplify right side
    153,001.67x = 17,950,302,086.04
  5. Step 5: Solve for x
    x = 17,950,302,086.04/153,001.67
  6. Step 6: Final answer
    x = 117,320.96

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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.