Home / 86,017,076.80-129,025,615.20-64,783,412.80

Finding the Fourth Proportional to 86,017,076.80, 129,025,615.20 and 64,783,412.80

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Solution

The fourth proportional to 86,017,076.80, 129,025,615.20 and 64,783,412.80 is: 97,175,119.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,017,076.80 : 129,025,615.20 = 64,783,412.80 : x
  2. Step 2: Convert to fraction form
    86,017,076.80/129,025,615.20 = 64,783,412.80/x
  3. Step 3: Cross multiply
    86,017,076.80x = 129,025,615.20 × 64,783,412.80
  4. Step 4: Simplify right side
    86,017,076.80x = 8,358,719,691,275,554
  5. Step 5: Solve for x
    x = 8,358,719,691,275,554/86,017,076.80
  6. Step 6: Final answer
    x = 97,175,119.20

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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.