Home / 86,289,326.20-129,433,989.30-40,939,694.20

Finding the Fourth Proportional to 86,289,326.20, 129,433,989.30 and 40,939,694.20

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Solution

The fourth proportional to 86,289,326.20, 129,433,989.30 and 40,939,694.20 is: 61,409,541.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,289,326.20 : 129,433,989.30 = 40,939,694.20 : x
  2. Step 2: Convert to fraction form
    86,289,326.20/129,433,989.30 = 40,939,694.20/x
  3. Step 3: Cross multiply
    86,289,326.20x = 129,433,989.30 × 40,939,694.20
  4. Step 4: Simplify right side
    86,289,326.20x = 5,298,987,941,028,072
  5. Step 5: Solve for x
    x = 5,298,987,941,028,072/86,289,326.20
  6. Step 6: Final answer
    x = 61,409,541.30

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Double scale
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Similar ratio
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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.