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Finding the Fourth Proportional to 56,718.71, 85,078.06 and 15,164.63

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Solution

The fourth proportional to 56,718.71, 85,078.06 and 15,164.63 is: 22,746.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,718.71 : 85,078.06 = 15,164.63 : x
  2. Step 2: Convert to fraction form
    56,718.71/85,078.06 = 15,164.63/x
  3. Step 3: Cross multiply
    56,718.71x = 85,078.06 × 15,164.63
  4. Step 4: Simplify right side
    56,718.71x = 1,290,176,837.72
  5. Step 5: Solve for x
    x = 1,290,176,837.72/56,718.71
  6. Step 6: Final answer
    x = 22,746.94

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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.