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Finding the Fourth Proportional to 528,517.85, 729,353.77 and 286,800.48

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Solution

The fourth proportional to 528,517.85, 729,353.77 and 286,800.48 is: 395,784.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,517.85 : 729,353.77 = 286,800.48 : x
  2. Step 2: Convert to fraction form
    528,517.85/729,353.77 = 286,800.48/x
  3. Step 3: Cross multiply
    528,517.85x = 729,353.77 × 286,800.48
  4. Step 4: Simplify right side
    528,517.85x = 209,179,010,608.81
  5. Step 5: Solve for x
    x = 209,179,010,608.81/528,517.85
  6. Step 6: Final answer
    x = 395,784.20

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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.