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Finding the Fourth Proportional to 60,921.73, 84,089.87 and 35,434.09

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Solution

The fourth proportional to 60,921.73, 84,089.87 and 35,434.09 is: 48,909.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,921.73 : 84,089.87 = 35,434.09 : x
  2. Step 2: Convert to fraction form
    60,921.73/84,089.87 = 35,434.09/x
  3. Step 3: Cross multiply
    60,921.73x = 84,089.87 × 35,434.09
  4. Step 4: Simplify right side
    60,921.73x = 2,979,648,021.67
  5. Step 5: Solve for x
    x = 2,979,648,021.67/60,921.73
  6. Step 6: Final answer
    x = 48,909.45

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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.