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Finding the Fourth Proportional to 661,364,616.16, 992,068,410.51 and 194,986,930.96

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Solution

The fourth proportional to 661,364,616.16, 992,068,410.51 and 194,986,930.96 is: 292,486,731.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,364,616.16 : 992,068,410.51 = 194,986,930.96 : x
  2. Step 2: Convert to fraction form
    661,364,616.16/992,068,410.51 = 194,986,930.96/x
  3. Step 3: Cross multiply
    661,364,616.16x = 992,068,410.51 × 194,986,930.96
  4. Step 4: Simplify right side
    661,364,616.16x = 193,440,374,665,230,144
  5. Step 5: Solve for x
    x = 193,440,374,665,230,144/661,364,616.16
  6. Step 6: Final answer
    x = 292,486,731.13

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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.