Home / 85,968,313.20-128,952,469.80-57,120,908.40

Finding the Fourth Proportional to 85,968,313.20, 128,952,469.80 and 57,120,908.40

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Solution

The fourth proportional to 85,968,313.20, 128,952,469.80 and 57,120,908.40 is: 85,681,362.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,968,313.20 : 128,952,469.80 = 57,120,908.40 : x
  2. Step 2: Convert to fraction form
    85,968,313.20/128,952,469.80 = 57,120,908.40/x
  3. Step 3: Cross multiply
    85,968,313.20x = 128,952,469.80 × 57,120,908.40
  4. Step 4: Simplify right side
    85,968,313.20x = 7,365,882,215,399,566
  5. Step 5: Solve for x
    x = 7,365,882,215,399,566/85,968,313.20
  6. Step 6: Final answer
    x = 85,681,362.60

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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.