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Finding the Fourth Proportional to 65,959,276.40, 98,789,615.40 and 39,085,420.40

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Solution

The fourth proportional to 65,959,276.40, 98,789,615.40 and 39,085,420.40 is: 58,539,660.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,959,276.40 : 98,789,615.40 = 39,085,420.40 : x
  2. Step 2: Convert to fraction form
    65,959,276.40/98,789,615.40 = 39,085,420.40/x
  3. Step 3: Cross multiply
    65,959,276.40x = 98,789,615.40 × 39,085,420.40
  4. Step 4: Simplify right side
    65,959,276.40x = 3,861,233,649,063,314
  5. Step 5: Solve for x
    x = 3,861,233,649,063,314/65,959,276.40
  6. Step 6: Final answer
    x = 58,539,660.53

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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.