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Finding the Fourth Proportional to 113,859.72, 157,114.49 and 66,103.74

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Solution

The fourth proportional to 113,859.72, 157,114.49 and 66,103.74 is: 91,216.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,859.72 : 157,114.49 = 66,103.74 : x
  2. Step 2: Convert to fraction form
    113,859.72/157,114.49 = 66,103.74/x
  3. Step 3: Cross multiply
    113,859.72x = 157,114.49 × 66,103.74
  4. Step 4: Simplify right side
    113,859.72x = 10,385,855,066.67
  5. Step 5: Solve for x
    x = 10,385,855,066.67/113,859.72
  6. Step 6: Final answer
    x = 91,216.24

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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.