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Finding the Fourth Proportional to 68,718.10, 103,077.15 and 68,718.10

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Solution

The fourth proportional to 68,718.10, 103,077.15 and 68,718.10 is: 103,077.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,718.10 : 103,077.15 = 68,718.10 : x
  2. Step 2: Convert to fraction form
    68,718.10/103,077.15 = 68,718.10/x
  3. Step 3: Cross multiply
    68,718.10x = 103,077.15 × 68,718.10
  4. Step 4: Simplify right side
    68,718.10x = 7,083,265,901.42
  5. Step 5: Solve for x
    x = 7,083,265,901.42/68,718.10
  6. Step 6: Final answer
    x = 103,077.15

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1.5x scale

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.