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Finding the Fourth Proportional to 10,045.76, 13,863.97 and 5,570.91

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Solution

The fourth proportional to 10,045.76, 13,863.97 and 5,570.91 is: 7,688.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,045.76 : 13,863.97 = 5,570.91 : x
  2. Step 2: Convert to fraction form
    10,045.76/13,863.97 = 5,570.91/x
  3. Step 3: Cross multiply
    10,045.76x = 13,863.97 × 5,570.91
  4. Step 4: Simplify right side
    10,045.76x = 77,234,929.11
  5. Step 5: Solve for x
    x = 77,234,929.11/10,045.76
  6. Step 6: Final answer
    x = 7,688.31

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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.