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Finding the Fourth Proportional to 528,563.70, 729,418.41 and 286,846.32

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Solution

The fourth proportional to 528,563.70, 729,418.41 and 286,846.32 is: 395,848.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,563.70 : 729,418.41 = 286,846.32 : x
  2. Step 2: Convert to fraction form
    528,563.70/729,418.41 = 286,846.32/x
  3. Step 3: Cross multiply
    528,563.70x = 729,418.41 × 286,846.32
  4. Step 4: Simplify right side
    528,563.70x = 209,230,986,648.75
  5. Step 5: Solve for x
    x = 209,230,986,648.75/528,563.70
  6. Step 6: Final answer
    x = 395,848.20

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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.