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Finding the Fourth Proportional to 1,217,282,649, 1,679,708,337.73 and 681,463,654.66

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Solution

The fourth proportional to 1,217,282,649, 1,679,708,337.73 and 681,463,654.66 is: 940,340,506.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217,282,649 : 1,679,708,337.73 = 681,463,654.66 : x
  2. Step 2: Convert to fraction form
    1,217,282,649/1,679,708,337.73 = 681,463,654.66/x
  3. Step 3: Cross multiply
    1,217,282,649x = 1,679,708,337.73 × 681,463,654.66
  4. Step 4: Simplify right side
    1,217,282,649x = 1,144,660,182,592,359,296
  5. Step 5: Solve for x
    x = 1,144,660,182,592,359,296/1,217,282,649
  6. Step 6: Final answer
    x = 940,340,506.40

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Double scale
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1.5x scale

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.