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Finding the Fourth Proportional to 8,478.46, 11,700.36 and 4,701.70

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Solution

The fourth proportional to 8,478.46, 11,700.36 and 4,701.70 is: 6,488.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,478.46 : 11,700.36 = 4,701.70 : x
  2. Step 2: Convert to fraction form
    8,478.46/11,700.36 = 4,701.70/x
  3. Step 3: Cross multiply
    8,478.46x = 11,700.36 × 4,701.70
  4. Step 4: Simplify right side
    8,478.46x = 55,011,582.61
  5. Step 5: Solve for x
    x = 55,011,582.61/8,478.46
  6. Step 6: Final answer
    x = 6,488.39

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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.