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Finding the Fourth Proportional to 7,841.68, 11,747.13 and 4,547.85

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Solution

The fourth proportional to 7,841.68, 11,747.13 and 4,547.85 is: 6,812.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,841.68 : 11,747.13 = 4,547.85 : x
  2. Step 2: Convert to fraction form
    7,841.68/11,747.13 = 4,547.85/x
  3. Step 3: Cross multiply
    7,841.68x = 11,747.13 × 4,547.85
  4. Step 4: Simplify right side
    7,841.68x = 53,424,124.06
  5. Step 5: Solve for x
    x = 53,424,124.06/7,841.68
  6. Step 6: Final answer
    x = 6,812.84

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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.