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Finding the Fourth Proportional to 95,681,509.80, 143,522,264.70 and 90,642,661.80

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Solution

The fourth proportional to 95,681,509.80, 143,522,264.70 and 90,642,661.80 is: 135,963,992.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,681,509.80 : 143,522,264.70 = 90,642,661.80 : x
  2. Step 2: Convert to fraction form
    95,681,509.80/143,522,264.70 = 90,642,661.80/x
  3. Step 3: Cross multiply
    95,681,509.80x = 143,522,264.70 × 90,642,661.80
  4. Step 4: Simplify right side
    95,681,509.80x = 13,009,240,099,972,176
  5. Step 5: Solve for x
    x = 13,009,240,099,972,176/95,681,509.80
  6. Step 6: Final answer
    x = 135,963,992.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.