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Finding the Fourth Proportional to 661,364,616.53, 992,068,411.07 and 194,986,931.33

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Solution

The fourth proportional to 661,364,616.53, 992,068,411.07 and 194,986,931.33 is: 292,486,731.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,364,616.53 : 992,068,411.07 = 194,986,931.33 : x
  2. Step 2: Convert to fraction form
    661,364,616.53/992,068,411.07 = 194,986,931.33/x
  3. Step 3: Cross multiply
    661,364,616.53x = 992,068,411.07 × 194,986,931.33
  4. Step 4: Simplify right side
    661,364,616.53x = 193,440,375,146,935,936
  5. Step 5: Solve for x
    x = 193,440,375,146,935,936/661,364,616.53
  6. Step 6: Final answer
    x = 292,486,731.69

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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.