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Finding the Fourth Proportional to 117,195.98, 161,718.86 and 65,503.40

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Solution

The fourth proportional to 117,195.98, 161,718.86 and 65,503.40 is: 90,388.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,195.98 : 161,718.86 = 65,503.40 : x
  2. Step 2: Convert to fraction form
    117,195.98/161,718.86 = 65,503.40/x
  3. Step 3: Cross multiply
    117,195.98x = 161,718.86 × 65,503.40
  4. Step 4: Simplify right side
    117,195.98x = 10,593,134,529.29
  5. Step 5: Solve for x
    x = 10,593,134,529.29/117,195.98
  6. Step 6: Final answer
    x = 90,388.21

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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.