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Finding the Fourth Proportional to 144,812.40, 217,218.60 and 121,484.40

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Solution

The fourth proportional to 144,812.40, 217,218.60 and 121,484.40 is: 182,226.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,812.40 : 217,218.60 = 121,484.40 : x
  2. Step 2: Convert to fraction form
    144,812.40/217,218.60 = 121,484.40/x
  3. Step 3: Cross multiply
    144,812.40x = 217,218.60 × 121,484.40
  4. Step 4: Simplify right side
    144,812.40x = 26,388,671,289.84
  5. Step 5: Solve for x
    x = 26,388,671,289.84/144,812.40
  6. Step 6: Final answer
    x = 182,226.60

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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.