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Finding the Fourth Proportional to 220,607.55, 330,289.85 and 140,448.53

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Solution

The fourth proportional to 220,607.55, 330,289.85 and 140,448.53 is: 210,277.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,607.55 : 330,289.85 = 140,448.53 : x
  2. Step 2: Convert to fraction form
    220,607.55/330,289.85 = 140,448.53/x
  3. Step 3: Cross multiply
    220,607.55x = 330,289.85 × 140,448.53
  4. Step 4: Simplify right side
    220,607.55x = 46,388,725,083.27
  5. Step 5: Solve for x
    x = 46,388,725,083.27/220,607.55
  6. Step 6: Final answer
    x = 210,277.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.