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Finding the Fourth Proportional to 528,564.09, 729,418.92 and 286,846.71

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Solution

The fourth proportional to 528,564.09, 729,418.92 and 286,846.71 is: 395,848.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,564.09 : 729,418.92 = 286,846.71 : x
  2. Step 2: Convert to fraction form
    528,564.09/729,418.92 = 286,846.71/x
  3. Step 3: Cross multiply
    528,564.09x = 729,418.92 × 286,846.71
  4. Step 4: Simplify right side
    528,564.09x = 209,231,417,413.75
  5. Step 5: Solve for x
    x = 209,231,417,413.75/528,564.09
  6. Step 6: Final answer
    x = 395,848.72

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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.