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Finding the Fourth Proportional to 63,842,328.81, 95,776,945.29 and 20,708,169.30

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Solution

The fourth proportional to 63,842,328.81, 95,776,945.29 and 20,708,169.30 is: 31,066,617.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,842,328.81 : 95,776,945.29 = 20,708,169.30 : x
  2. Step 2: Convert to fraction form
    63,842,328.81/95,776,945.29 = 20,708,169.30/x
  3. Step 3: Cross multiply
    63,842,328.81x = 95,776,945.29 × 20,708,169.30
  4. Step 4: Simplify right side
    63,842,328.81x = 1,983,365,198,102,157.75
  5. Step 5: Solve for x
    x = 1,983,365,198,102,157.75/63,842,328.81
  6. Step 6: Final answer
    x = 31,066,617.32

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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.