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Finding the Fourth Proportional to 56,446.70, 78,921.70 and 56,446.70

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Solution

The fourth proportional to 56,446.70, 78,921.70 and 56,446.70 is: 78,921.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,446.70 : 78,921.70 = 56,446.70 : x
  2. Step 2: Convert to fraction form
    56,446.70/78,921.70 = 56,446.70/x
  3. Step 3: Cross multiply
    56,446.70x = 78,921.70 × 56,446.70
  4. Step 4: Simplify right side
    56,446.70x = 4,454,869,523.39
  5. Step 5: Solve for x
    x = 4,454,869,523.39/56,446.70
  6. Step 6: Final answer
    x = 78,921.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.