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Finding the Fourth Proportional to 65,470.71, 98,211.74 and 18,085.79

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Solution

The fourth proportional to 65,470.71, 98,211.74 and 18,085.79 is: 27,130.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,470.71 : 98,211.74 = 18,085.79 : x
  2. Step 2: Convert to fraction form
    65,470.71/98,211.74 = 18,085.79/x
  3. Step 3: Cross multiply
    65,470.71x = 98,211.74 × 18,085.79
  4. Step 4: Simplify right side
    65,470.71x = 1,776,237,060.27
  5. Step 5: Solve for x
    x = 1,776,237,060.27/65,470.71
  6. Step 6: Final answer
    x = 27,130.25

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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.