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Finding the Fourth Proportional to 123,762.16, 170,791.72 and 70,046.24

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Solution

The fourth proportional to 123,762.16, 170,791.72 and 70,046.24 is: 96,663.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,762.16 : 170,791.72 = 70,046.24 : x
  2. Step 2: Convert to fraction form
    123,762.16/170,791.72 = 70,046.24/x
  3. Step 3: Cross multiply
    123,762.16x = 170,791.72 × 70,046.24
  4. Step 4: Simplify right side
    123,762.16x = 11,963,317,809.13
  5. Step 5: Solve for x
    x = 11,963,317,809.13/123,762.16
  6. Step 6: Final answer
    x = 96,663.78

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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.