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Finding the Fourth Proportional to 114,111.90, 157,466.43 and 66,361.86

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Solution

The fourth proportional to 114,111.90, 157,466.43 and 66,361.86 is: 91,574.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,111.90 : 157,466.43 = 66,361.86 : x
  2. Step 2: Convert to fraction form
    114,111.90/157,466.43 = 66,361.86/x
  3. Step 3: Cross multiply
    114,111.90x = 157,466.43 × 66,361.86
  4. Step 4: Simplify right side
    114,111.90x = 10,449,765,182.36
  5. Step 5: Solve for x
    x = 10,449,765,182.36/114,111.90
  6. Step 6: Final answer
    x = 91,574.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.