Home / 128,385,308.33-177,156,778.60-71,873,148.77

Finding the Fourth Proportional to 128,385,308.33, 177,156,778.60 and 71,873,148.77

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Solution

The fourth proportional to 128,385,308.33, 177,156,778.60 and 71,873,148.77 is: 99,176,577.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,385,308.33 : 177,156,778.60 = 71,873,148.77 : x
  2. Step 2: Convert to fraction form
    128,385,308.33/177,156,778.60 = 71,873,148.77/x
  3. Step 3: Cross multiply
    128,385,308.33x = 177,156,778.60 × 71,873,148.77
  4. Step 4: Simplify right side
    128,385,308.33x = 12,732,815,502,866,286
  5. Step 5: Solve for x
    x = 12,732,815,502,866,286/128,385,308.33
  6. Step 6: Final answer
    x = 99,176,577.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.