Home / 128,259,900.87-176,993,921.32-69,521,304.85

Finding the Fourth Proportional to 128,259,900.87, 176,993,921.32 and 69,521,304.85

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Solution

The fourth proportional to 128,259,900.87, 176,993,921.32 and 69,521,304.85 is: 95,936,830.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,259,900.87 : 176,993,921.32 = 69,521,304.85 : x
  2. Step 2: Convert to fraction form
    128,259,900.87/176,993,921.32 = 69,521,304.85/x
  3. Step 3: Cross multiply
    128,259,900.87x = 176,993,921.32 × 69,521,304.85
  4. Step 4: Simplify right side
    128,259,900.87x = 12,304,848,360,684,632
  5. Step 5: Solve for x
    x = 12,304,848,360,684,632/128,259,900.87
  6. Step 6: Final answer
    x = 95,936,830.43

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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.