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Finding the Fourth Proportional to 383,121.01, 528,154.63 and 268,043.12

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Solution

The fourth proportional to 383,121.01, 528,154.63 and 268,043.12 is: 369,513.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,121.01 : 528,154.63 = 268,043.12 : x
  2. Step 2: Convert to fraction form
    383,121.01/528,154.63 = 268,043.12/x
  3. Step 3: Cross multiply
    383,121.01x = 528,154.63 × 268,043.12
  4. Step 4: Simplify right side
    383,121.01x = 141,568,212,226.87
  5. Step 5: Solve for x
    x = 141,568,212,226.87/383,121.01
  6. Step 6: Final answer
    x = 369,513.05

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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.