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Finding the Fourth Proportional to 78,792.17, 118,189.88 and 43,953.53

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Solution

The fourth proportional to 78,792.17, 118,189.88 and 43,953.53 is: 65,931.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,792.17 : 118,189.88 = 43,953.53 : x
  2. Step 2: Convert to fraction form
    78,792.17/118,189.88 = 43,953.53/x
  3. Step 3: Cross multiply
    78,792.17x = 118,189.88 × 43,953.53
  4. Step 4: Simplify right side
    78,792.17x = 5,194,862,436.28
  5. Step 5: Solve for x
    x = 5,194,862,436.28/78,792.17
  6. Step 6: Final answer
    x = 65,931.20

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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.