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Finding the Fourth Proportional to 63,842,329.78, 95,776,946.82 and 20,708,170.30

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Solution

The fourth proportional to 63,842,329.78, 95,776,946.82 and 20,708,170.30 is: 31,066,618.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,842,329.78 : 95,776,946.82 = 20,708,170.30 : x
  2. Step 2: Convert to fraction form
    63,842,329.78/95,776,946.82 = 20,708,170.30/x
  3. Step 3: Cross multiply
    63,842,329.78x = 95,776,946.82 × 20,708,170.30
  4. Step 4: Simplify right side
    63,842,329.78x = 1,983,365,325,562,603.25
  5. Step 5: Solve for x
    x = 1,983,365,325,562,603.25/63,842,329.78
  6. Step 6: Final answer
    x = 31,066,618.85

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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.