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Finding the Fourth Proportional to 202,198,101.64, 303,305,803.80 and 79,402,985.88

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Solution

The fourth proportional to 202,198,101.64, 303,305,803.80 and 79,402,985.88 is: 119,107,876.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,198,101.64 : 303,305,803.80 = 79,402,985.88 : x
  2. Step 2: Convert to fraction form
    202,198,101.64/303,305,803.80 = 79,402,985.88/x
  3. Step 3: Cross multiply
    202,198,101.64x = 303,305,803.80 × 79,402,985.88
  4. Step 4: Simplify right side
    202,198,101.64x = 24,083,386,456,453,448
  5. Step 5: Solve for x
    x = 24,083,386,456,453,448/202,198,101.64
  6. Step 6: Final answer
    x = 119,107,876.19

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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.