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Finding the Fourth Proportional to 99,654.80, 137,518.44 and 61,928.24

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Solution

The fourth proportional to 99,654.80, 137,518.44 and 61,928.24 is: 85,457.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,654.80 : 137,518.44 = 61,928.24 : x
  2. Step 2: Convert to fraction form
    99,654.80/137,518.44 = 61,928.24/x
  3. Step 3: Cross multiply
    99,654.80x = 137,518.44 × 61,928.24
  4. Step 4: Simplify right side
    99,654.80x = 8,516,274,956.75
  5. Step 5: Solve for x
    x = 8,516,274,956.75/99,654.80
  6. Step 6: Final answer
    x = 85,457.75

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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.