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Finding the Fourth Proportional to 382,616.64, 528,010.56 and 212,847.12

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Solution

The fourth proportional to 382,616.64, 528,010.56 and 212,847.12 is: 293,728.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,616.64 : 528,010.56 = 212,847.12 : x
  2. Step 2: Convert to fraction form
    382,616.64/528,010.56 = 212,847.12/x
  3. Step 3: Cross multiply
    382,616.64x = 528,010.56 × 212,847.12
  4. Step 4: Simplify right side
    382,616.64x = 112,385,527,025.59
  5. Step 5: Solve for x
    x = 112,385,527,025.59/382,616.64
  6. Step 6: Final answer
    x = 293,728.80

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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.