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Finding the Fourth Proportional to 111,399.60, 153,741.17 and 61,108.32

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Solution

The fourth proportional to 111,399.60, 153,741.17 and 61,108.32 is: 84,334.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,399.60 : 153,741.17 = 61,108.32 : x
  2. Step 2: Convert to fraction form
    111,399.60/153,741.17 = 61,108.32/x
  3. Step 3: Cross multiply
    111,399.60x = 153,741.17 × 61,108.32
  4. Step 4: Simplify right side
    111,399.60x = 9,394,864,307.99
  5. Step 5: Solve for x
    x = 9,394,864,307.99/111,399.60
  6. Step 6: Final answer
    x = 84,334.81

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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.