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Finding the Fourth Proportional to 65,955.61, 98,966.22 and 52,642.25

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Solution

The fourth proportional to 65,955.61, 98,966.22 and 52,642.25 is: 78,989.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,955.61 : 98,966.22 = 52,642.25 : x
  2. Step 2: Convert to fraction form
    65,955.61/98,966.22 = 52,642.25/x
  3. Step 3: Cross multiply
    65,955.61x = 98,966.22 × 52,642.25
  4. Step 4: Simplify right side
    65,955.61x = 5,209,803,999.96
  5. Step 5: Solve for x
    x = 5,209,803,999.96/65,955.61
  6. Step 6: Final answer
    x = 78,989.55

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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.