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Finding the Fourth Proportional to 8,572.88, 11,828.43 and 5,386.68

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Solution

The fourth proportional to 8,572.88, 11,828.43 and 5,386.68 is: 7,432.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,572.88 : 11,828.43 = 5,386.68 : x
  2. Step 2: Convert to fraction form
    8,572.88/11,828.43 = 5,386.68/x
  3. Step 3: Cross multiply
    8,572.88x = 11,828.43 × 5,386.68
  4. Step 4: Simplify right side
    8,572.88x = 63,715,967.31
  5. Step 5: Solve for x
    x = 63,715,967.31/8,572.88
  6. Step 6: Final answer
    x = 7,432.27

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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.