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Finding the Fourth Proportional to 201,984,010.40, 302,976,015.60 and 65,673,840.80

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Solution

The fourth proportional to 201,984,010.40, 302,976,015.60 and 65,673,840.80 is: 98,510,761.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,984,010.40 : 302,976,015.60 = 65,673,840.80 : x
  2. Step 2: Convert to fraction form
    201,984,010.40/302,976,015.60 = 65,673,840.80/x
  3. Step 3: Cross multiply
    201,984,010.40x = 302,976,015.60 × 65,673,840.80
  4. Step 4: Simplify right side
    201,984,010.40x = 19,897,598,614,732,716
  5. Step 5: Solve for x
    x = 19,897,598,614,732,716/201,984,010.40
  6. Step 6: Final answer
    x = 98,510,761.20

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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.