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Finding the Fourth Proportional to 528,984.96, 729,984.96 and 287,256.48

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Solution

The fourth proportional to 528,984.96, 729,984.96 and 287,256.48 is: 396,406.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,984.96 : 729,984.96 = 287,256.48 : x
  2. Step 2: Convert to fraction form
    528,984.96/729,984.96 = 287,256.48/x
  3. Step 3: Cross multiply
    528,984.96x = 729,984.96 × 287,256.48
  4. Step 4: Simplify right side
    528,984.96x = 209,692,910,062.54
  5. Step 5: Solve for x
    x = 209,692,910,062.54/528,984.96
  6. Step 6: Final answer
    x = 396,406.19

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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.