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Finding the Fourth Proportional to 383,121.02, 528,700.56 and 211,055.10

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Solution

The fourth proportional to 383,121.02, 528,700.56 and 211,055.10 is: 291,252.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,121.02 : 528,700.56 = 211,055.10 : x
  2. Step 2: Convert to fraction form
    383,121.02/528,700.56 = 211,055.10/x
  3. Step 3: Cross multiply
    383,121.02x = 528,700.56 × 211,055.10
  4. Step 4: Simplify right side
    383,121.02x = 111,584,949,560.86
  5. Step 5: Solve for x
    x = 111,584,949,560.86/383,121.02
  6. Step 6: Final answer
    x = 291,252.49

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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.