Home / 128,319,833.31-192,471,778.33-40,879,188.37

Finding the Fourth Proportional to 128,319,833.31, 192,471,778.33 and 40,879,188.37

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Solution

The fourth proportional to 128,319,833.31, 192,471,778.33 and 40,879,188.37 is: 61,316,243.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,319,833.31 : 192,471,778.33 = 40,879,188.37 : x
  2. Step 2: Convert to fraction form
    128,319,833.31/192,471,778.33 = 40,879,188.37/x
  3. Step 3: Cross multiply
    128,319,833.31x = 192,471,778.33 × 40,879,188.37
  4. Step 4: Simplify right side
    128,319,833.31x = 7,868,090,082,399,346
  5. Step 5: Solve for x
    x = 7,868,090,082,399,346/128,319,833.31
  6. Step 6: Final answer
    x = 61,316,243.01

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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.