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Finding the Fourth Proportional to 528,667.75, 729,562.39 and 286,950.38

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Solution

The fourth proportional to 528,667.75, 729,562.39 and 286,950.38 is: 395,992.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,667.75 : 729,562.39 = 286,950.38 : x
  2. Step 2: Convert to fraction form
    528,667.75/729,562.39 = 286,950.38/x
  3. Step 3: Cross multiply
    528,667.75x = 729,562.39 × 286,950.38
  4. Step 4: Simplify right side
    528,667.75x = 209,348,206,150.74
  5. Step 5: Solve for x
    x = 209,348,206,150.74/528,667.75
  6. Step 6: Final answer
    x = 395,992.01

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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.