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Finding the Fourth Proportional to 15,887.92, 23,828.72 and 5,356.90

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Solution

The fourth proportional to 15,887.92, 23,828.72 and 5,356.90 is: 8,034.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,887.92 : 23,828.72 = 5,356.90 : x
  2. Step 2: Convert to fraction form
    15,887.92/23,828.72 = 5,356.90/x
  3. Step 3: Cross multiply
    15,887.92x = 23,828.72 × 5,356.90
  4. Step 4: Simplify right side
    15,887.92x = 127,648,070.17
  5. Step 5: Solve for x
    x = 127,648,070.17/15,887.92
  6. Step 6: Final answer
    x = 8,034.28

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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.