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Finding the Fourth Proportional to 56,712.07, 85,068.09 and 15,159.07

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Solution

The fourth proportional to 56,712.07, 85,068.09 and 15,159.07 is: 22,738.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,712.07 : 85,068.09 = 15,159.07 : x
  2. Step 2: Convert to fraction form
    56,712.07/85,068.09 = 15,159.07/x
  3. Step 3: Cross multiply
    56,712.07x = 85,068.09 × 15,159.07
  4. Step 4: Simplify right side
    56,712.07x = 1,289,553,131.08
  5. Step 5: Solve for x
    x = 1,289,553,131.08/56,712.07
  6. Step 6: Final answer
    x = 22,738.60

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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.