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Finding the Fourth Proportional to 14,356.71, 19,812.51 and 7,896.65

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Solution

The fourth proportional to 14,356.71, 19,812.51 and 7,896.65 is: 10,897.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,356.71 : 19,812.51 = 7,896.65 : x
  2. Step 2: Convert to fraction form
    14,356.71/19,812.51 = 7,896.65/x
  3. Step 3: Cross multiply
    14,356.71x = 19,812.51 × 7,896.65
  4. Step 4: Simplify right side
    14,356.71x = 156,452,358.03
  5. Step 5: Solve for x
    x = 156,452,358.03/14,356.71
  6. Step 6: Final answer
    x = 10,897.51

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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.