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Finding the Fourth Proportional to 638,044.64, 957,215.80 and 211,549.27

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Solution

The fourth proportional to 638,044.64, 957,215.80 and 211,549.27 is: 317,373.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,044.64 : 957,215.80 = 211,549.27 : x
  2. Step 2: Convert to fraction form
    638,044.64/957,215.80 = 211,549.27/x
  3. Step 3: Cross multiply
    638,044.64x = 957,215.80 × 211,549.27
  4. Step 4: Simplify right side
    638,044.64x = 202,498,303,983.63
  5. Step 5: Solve for x
    x = 202,498,303,983.63/638,044.64
  6. Step 6: Final answer
    x = 317,373.25

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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.