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Finding the Fourth Proportional to 61,264,657.80, 91,896,986.70 and 54,090,204.30

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Solution

The fourth proportional to 61,264,657.80, 91,896,986.70 and 54,090,204.30 is: 81,135,306.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,264,657.80 : 91,896,986.70 = 54,090,204.30 : x
  2. Step 2: Convert to fraction form
    61,264,657.80/91,896,986.70 = 54,090,204.30/x
  3. Step 3: Cross multiply
    61,264,657.80x = 91,896,986.70 × 54,090,204.30
  4. Step 4: Simplify right side
    61,264,657.80x = 4,970,726,785,157,383
  5. Step 5: Solve for x
    x = 4,970,726,785,157,383/61,264,657.80
  6. Step 6: Final answer
    x = 81,135,306.45

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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.