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Finding the Fourth Proportional to 111,507.40, 153,810.22 and 66,153.27

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Solution

The fourth proportional to 111,507.40, 153,810.22 and 66,153.27 is: 91,249.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,507.40 : 153,810.22 = 66,153.27 : x
  2. Step 2: Convert to fraction form
    111,507.40/153,810.22 = 66,153.27/x
  3. Step 3: Cross multiply
    111,507.40x = 153,810.22 × 66,153.27
  4. Step 4: Simplify right side
    111,507.40x = 10,175,048,712.92
  5. Step 5: Solve for x
    x = 10,175,048,712.92/111,507.40
  6. Step 6: Final answer
    x = 91,249.99

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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.