Home / 85,963,575.90-128,945,363.85-76,557,726.30

Finding the Fourth Proportional to 85,963,575.90, 128,945,363.85 and 76,557,726.30

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Solution

The fourth proportional to 85,963,575.90, 128,945,363.85 and 76,557,726.30 is: 114,836,589.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,963,575.90 : 128,945,363.85 = 76,557,726.30 : x
  2. Step 2: Convert to fraction form
    85,963,575.90/128,945,363.85 = 76,557,726.30/x
  3. Step 3: Cross multiply
    85,963,575.90x = 128,945,363.85 × 76,557,726.30
  4. Step 4: Simplify right side
    85,963,575.90x = 9,871,763,873,282,214
  5. Step 5: Solve for x
    x = 9,871,763,873,282,214/85,963,575.90
  6. Step 6: Final answer
    x = 114,836,589.45

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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.