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Finding the Fourth Proportional to 115,859,744.64, 159,868,674.24 and 66,957,728.64

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Solution

The fourth proportional to 115,859,744.64, 159,868,674.24 and 66,957,728.64 is: 92,391,393.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,859,744.64 : 159,868,674.24 = 66,957,728.64 : x
  2. Step 2: Convert to fraction form
    115,859,744.64/159,868,674.24 = 66,957,728.64/x
  3. Step 3: Cross multiply
    115,859,744.64x = 159,868,674.24 × 66,957,728.64
  4. Step 4: Simplify right side
    115,859,744.64x = 10,704,443,307,798,478
  5. Step 5: Solve for x
    x = 10,704,443,307,798,478/115,859,744.64
  6. Step 6: Final answer
    x = 92,391,393.93

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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.