Home / 86,516,662.20-129,774,993.30-79,947,497.40

Finding the Fourth Proportional to 86,516,662.20, 129,774,993.30 and 79,947,497.40

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Solution

The fourth proportional to 86,516,662.20, 129,774,993.30 and 79,947,497.40 is: 119,921,246.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,516,662.20 : 129,774,993.30 = 79,947,497.40 : x
  2. Step 2: Convert to fraction form
    86,516,662.20/129,774,993.30 = 79,947,497.40/x
  3. Step 3: Cross multiply
    86,516,662.20x = 129,774,993.30 × 79,947,497.40
  4. Step 4: Simplify right side
    86,516,662.20x = 10,375,185,939,436,768
  5. Step 5: Solve for x
    x = 10,375,185,939,436,768/86,516,662.20
  6. Step 6: Final answer
    x = 119,921,246.10

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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.