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Finding the Fourth Proportional to 88,904.40, 133,356.60 and 74,907.60

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Solution

The fourth proportional to 88,904.40, 133,356.60 and 74,907.60 is: 112,361.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,904.40 : 133,356.60 = 74,907.60 : x
  2. Step 2: Convert to fraction form
    88,904.40/133,356.60 = 74,907.60/x
  3. Step 3: Cross multiply
    88,904.40x = 133,356.60 × 74,907.60
  4. Step 4: Simplify right side
    88,904.40x = 9,989,422,850.16
  5. Step 5: Solve for x
    x = 9,989,422,850.16/88,904.40
  6. Step 6: Final answer
    x = 112,361.40

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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.