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Finding the Fourth Proportional to 57,962.40, 86,943.60 and 54,045.60

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Solution

The fourth proportional to 57,962.40, 86,943.60 and 54,045.60 is: 81,068.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,962.40 : 86,943.60 = 54,045.60 : x
  2. Step 2: Convert to fraction form
    57,962.40/86,943.60 = 54,045.60/x
  3. Step 3: Cross multiply
    57,962.40x = 86,943.60 × 54,045.60
  4. Step 4: Simplify right side
    57,962.40x = 4,698,919,028.16
  5. Step 5: Solve for x
    x = 4,698,919,028.16/57,962.40
  6. Step 6: Final answer
    x = 81,068.40

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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.