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Finding the Fourth Proportional to 101,706.95, 140,470.49 and 69,386.07

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Solution

The fourth proportional to 101,706.95, 140,470.49 and 69,386.07 is: 95,831.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,706.95 : 140,470.49 = 69,386.07 : x
  2. Step 2: Convert to fraction form
    101,706.95/140,470.49 = 69,386.07/x
  3. Step 3: Cross multiply
    101,706.95x = 140,470.49 × 69,386.07
  4. Step 4: Simplify right side
    101,706.95x = 9,746,694,905.14
  5. Step 5: Solve for x
    x = 9,746,694,905.14/101,706.95
  6. Step 6: Final answer
    x = 95,831.16

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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.