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Finding the Fourth Proportional to 74,644.36, 111,420.42 and 65,787.32

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Solution

The fourth proportional to 74,644.36, 111,420.42 and 65,787.32 is: 98,199.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,644.36 : 111,420.42 = 65,787.32 : x
  2. Step 2: Convert to fraction form
    74,644.36/111,420.42 = 65,787.32/x
  3. Step 3: Cross multiply
    74,644.36x = 111,420.42 × 65,787.32
  4. Step 4: Simplify right side
    74,644.36x = 7,330,050,825.07
  5. Step 5: Solve for x
    x = 7,330,050,825.07/74,644.36
  6. Step 6: Final answer
    x = 98,199.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.