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Finding the Fourth Proportional to 111,771.60, 154,238.58 and 64,028.02

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Solution

The fourth proportional to 111,771.60, 154,238.58 and 64,028.02 is: 88,355.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,771.60 : 154,238.58 = 64,028.02 : x
  2. Step 2: Convert to fraction form
    111,771.60/154,238.58 = 64,028.02/x
  3. Step 3: Cross multiply
    111,771.60x = 154,238.58 × 64,028.02
  4. Step 4: Simplify right side
    111,771.60x = 9,875,590,885.01
  5. Step 5: Solve for x
    x = 9,875,590,885.01/111,771.60
  6. Step 6: Final answer
    x = 88,355.10

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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.