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Finding the Fourth Proportional to 65,280.80, 97,921.20 and 62,055.20

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Solution

The fourth proportional to 65,280.80, 97,921.20 and 62,055.20 is: 93,082.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,280.80 : 97,921.20 = 62,055.20 : x
  2. Step 2: Convert to fraction form
    65,280.80/97,921.20 = 62,055.20/x
  3. Step 3: Cross multiply
    65,280.80x = 97,921.20 × 62,055.20
  4. Step 4: Simplify right side
    65,280.80x = 6,076,519,650.24
  5. Step 5: Solve for x
    x = 6,076,519,650.24/65,280.80
  6. Step 6: Final answer
    x = 93,082.80

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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.