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Finding the Fourth Proportional to 103,968.40, 155,693.40 and 83,232.40

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Solution

The fourth proportional to 103,968.40, 155,693.40 and 83,232.40 is: 124,641.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,968.40 : 155,693.40 = 83,232.40 : x
  2. Step 2: Convert to fraction form
    103,968.40/155,693.40 = 83,232.40/x
  3. Step 3: Cross multiply
    103,968.40x = 155,693.40 × 83,232.40
  4. Step 4: Simplify right side
    103,968.40x = 12,958,735,346.16
  5. Step 5: Solve for x
    x = 12,958,735,346.16/103,968.40
  6. Step 6: Final answer
    x = 124,641.10

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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.