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Finding the Fourth Proportional to 722,490,848.70, 997,064,778.73 and 404,956,963.47

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Solution

The fourth proportional to 722,490,848.70, 997,064,778.73 and 404,956,963.47 is: 558,855,971.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,490,848.70 : 997,064,778.73 = 404,956,963.47 : x
  2. Step 2: Convert to fraction form
    722,490,848.70/997,064,778.73 = 404,956,963.47/x
  3. Step 3: Cross multiply
    722,490,848.70x = 997,064,778.73 × 404,956,963.47
  4. Step 4: Simplify right side
    722,490,848.70x = 403,768,325,177,388,288
  5. Step 5: Solve for x
    x = 403,768,325,177,388,288/722,490,848.70
  6. Step 6: Final answer
    x = 558,855,971.54

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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.