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Finding the Fourth Proportional to 83,987,550, 115,902,820.62 and 45,356,382

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Solution

The fourth proportional to 83,987,550, 115,902,820.62 and 45,356,382 is: 62,591,808.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,987,550 : 115,902,820.62 = 45,356,382 : x
  2. Step 2: Convert to fraction form
    83,987,550/115,902,820.62 = 45,356,382/x
  3. Step 3: Cross multiply
    83,987,550x = 115,902,820.62 × 45,356,382
  4. Step 4: Simplify right side
    83,987,550x = 5,256,932,606,918,197
  5. Step 5: Solve for x
    x = 5,256,932,606,918,197/83,987,550
  6. Step 6: Final answer
    x = 62,591,808.03

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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.