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Finding the Fourth Proportional to 82,956.60, 124,434.90 and 69,996.60

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Solution

The fourth proportional to 82,956.60, 124,434.90 and 69,996.60 is: 104,994.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,956.60 : 124,434.90 = 69,996.60 : x
  2. Step 2: Convert to fraction form
    82,956.60/124,434.90 = 69,996.60/x
  3. Step 3: Cross multiply
    82,956.60x = 124,434.90 × 69,996.60
  4. Step 4: Simplify right side
    82,956.60x = 8,710,019,921.34
  5. Step 5: Solve for x
    x = 8,710,019,921.34/82,956.60
  6. Step 6: Final answer
    x = 104,994.90

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Similar ratio
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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.