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Finding the Fourth Proportional to 154,064.70, 231,097.05 and 91,856.70

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Solution

The fourth proportional to 154,064.70, 231,097.05 and 91,856.70 is: 137,785.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,064.70 : 231,097.05 = 91,856.70 : x
  2. Step 2: Convert to fraction form
    154,064.70/231,097.05 = 91,856.70/x
  3. Step 3: Cross multiply
    154,064.70x = 231,097.05 × 91,856.70
  4. Step 4: Simplify right side
    154,064.70x = 21,227,812,392.74
  5. Step 5: Solve for x
    x = 21,227,812,392.74/154,064.70
  6. Step 6: Final answer
    x = 137,785.05

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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.