Home / 20,805,859.60-31,208,789.40-19,546,147.60

Finding the Fourth Proportional to 20,805,859.60, 31,208,789.40 and 19,546,147.60

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Solution

The fourth proportional to 20,805,859.60, 31,208,789.40 and 19,546,147.60 is: 29,319,221.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,805,859.60 : 31,208,789.40 = 19,546,147.60 : x
  2. Step 2: Convert to fraction form
    20,805,859.60/31,208,789.40 = 19,546,147.60/x
  3. Step 3: Cross multiply
    20,805,859.60x = 31,208,789.40 × 19,546,147.60
  4. Step 4: Simplify right side
    20,805,859.60x = 610,011,604,029,715.50
  5. Step 5: Solve for x
    x = 610,011,604,029,715.50/20,805,859.60
  6. Step 6: Final answer
    x = 29,319,221.40

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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.