Home / 28,819,780.47-39,772,239.84-15,766,736.58

Finding the Fourth Proportional to 28,819,780.47, 39,772,239.84 and 15,766,736.58

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Solution

The fourth proportional to 28,819,780.47, 39,772,239.84 and 15,766,736.58 is: 21,758,612.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,819,780.47 : 39,772,239.84 = 15,766,736.58 : x
  2. Step 2: Convert to fraction form
    28,819,780.47/39,772,239.84 = 15,766,736.58/x
  3. Step 3: Cross multiply
    28,819,780.47x = 39,772,239.84 × 15,766,736.58
  4. Step 4: Simplify right side
    28,819,780.47x = 627,078,428,753,861.38
  5. Step 5: Solve for x
    x = 627,078,428,753,861.38/28,819,780.47
  6. Step 6: Final answer
    x = 21,758,612.26

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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.