Home / 85,968,247.20-128,952,370.80-57,120,842.40

Finding the Fourth Proportional to 85,968,247.20, 128,952,370.80 and 57,120,842.40

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Solution

The fourth proportional to 85,968,247.20, 128,952,370.80 and 57,120,842.40 is: 85,681,263.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,968,247.20 : 128,952,370.80 = 57,120,842.40 : x
  2. Step 2: Convert to fraction form
    85,968,247.20/128,952,370.80 = 57,120,842.40/x
  3. Step 3: Cross multiply
    85,968,247.20x = 128,952,370.80 × 57,120,842.40
  4. Step 4: Simplify right side
    85,968,247.20x = 7,365,868,049,573,162
  5. Step 5: Solve for x
    x = 7,365,868,049,573,162/85,968,247.20
  6. Step 6: Final answer
    x = 85,681,263.60

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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.