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Finding the Fourth Proportional to 83,221.70, 124,832.55 and 70,051.10

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Solution

The fourth proportional to 83,221.70, 124,832.55 and 70,051.10 is: 105,076.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,221.70 : 124,832.55 = 70,051.10 : x
  2. Step 2: Convert to fraction form
    83,221.70/124,832.55 = 70,051.10/x
  3. Step 3: Cross multiply
    83,221.70x = 124,832.55 × 70,051.10
  4. Step 4: Simplify right side
    83,221.70x = 8,744,657,443.31
  5. Step 5: Solve for x
    x = 8,744,657,443.31/83,221.70
  6. Step 6: Final answer
    x = 105,076.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.