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Finding the Fourth Proportional to 7,047.84, 9,726.12 and 3,861.06

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Solution

The fourth proportional to 7,047.84, 9,726.12 and 3,861.06 is: 5,328.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,047.84 : 9,726.12 = 3,861.06 : x
  2. Step 2: Convert to fraction form
    7,047.84/9,726.12 = 3,861.06/x
  3. Step 3: Cross multiply
    7,047.84x = 9,726.12 × 3,861.06
  4. Step 4: Simplify right side
    7,047.84x = 37,553,132.89
  5. Step 5: Solve for x
    x = 37,553,132.89/7,047.84
  6. Step 6: Final answer
    x = 5,328.32

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1.5x scale

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.