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Finding the Fourth Proportional to 15,806.71, 23,710.07 and 4,721.18

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Solution

The fourth proportional to 15,806.71, 23,710.07 and 4,721.18 is: 7,081.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,806.71 : 23,710.07 = 4,721.18 : x
  2. Step 2: Convert to fraction form
    15,806.71/23,710.07 = 4,721.18/x
  3. Step 3: Cross multiply
    15,806.71x = 23,710.07 × 4,721.18
  4. Step 4: Simplify right side
    15,806.71x = 111,939,543.95
  5. Step 5: Solve for x
    x = 111,939,543.95/15,806.71
  6. Step 6: Final answer
    x = 7,081.77

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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.