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Finding the Fourth Proportional to 322,215.20, 483,322.80 and 144,807.20

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Solution

The fourth proportional to 322,215.20, 483,322.80 and 144,807.20 is: 217,210.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,215.20 : 483,322.80 = 144,807.20 : x
  2. Step 2: Convert to fraction form
    322,215.20/483,322.80 = 144,807.20/x
  3. Step 3: Cross multiply
    322,215.20x = 483,322.80 × 144,807.20
  4. Step 4: Simplify right side
    322,215.20x = 69,988,621,364.16
  5. Step 5: Solve for x
    x = 69,988,621,364.16/322,215.20
  6. Step 6: Final answer
    x = 217,210.80

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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.