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Finding the Fourth Proportional to 123,034.90, 172,365.50 and 123,034.90

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Solution

The fourth proportional to 123,034.90, 172,365.50 and 123,034.90 is: 172,365.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,034.90 : 172,365.50 = 123,034.90 : x
  2. Step 2: Convert to fraction form
    123,034.90/172,365.50 = 123,034.90/x
  3. Step 3: Cross multiply
    123,034.90x = 172,365.50 × 123,034.90
  4. Step 4: Simplify right side
    123,034.90x = 21,206,972,055.95
  5. Step 5: Solve for x
    x = 21,206,972,055.95/123,034.90
  6. Step 6: Final answer
    x = 172,365.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.