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Finding the Third Proportional to 147,078.75 and 207,115.50

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Solution

The third proportional to 147,078.75 and 207,115.50 is: 291,658.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,078.75 : 207,115.50 = 207,115.50 : x
  2. Step 2: Convert to fraction form
    147,078.75/207,115.50 = 207,115.50/x
  3. Step 3: Cross multiply
    147,078.75x = 207,115.50 × 207,115.50
  4. Step 4: Simplify right side
    147,078.75x = 42,896,830,340.25
  5. Step 5: Solve for x
    x = 42,896,830,340.25/147,078.75
  6. Step 6: Final answer
    x = 291,658.93

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.