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Finding the Fourth Proportional to 528,589.39, 729,453.72 and 286,871.89

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Solution

The fourth proportional to 528,589.39, 729,453.72 and 286,871.89 is: 395,883.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,589.39 : 729,453.72 = 286,871.89 : x
  2. Step 2: Convert to fraction form
    528,589.39/729,453.72 = 286,871.89/x
  3. Step 3: Cross multiply
    528,589.39x = 729,453.72 × 286,871.89
  4. Step 4: Simplify right side
    528,589.39x = 209,259,767,323.93
  5. Step 5: Solve for x
    x = 209,259,767,323.93/528,589.39
  6. Step 6: Final answer
    x = 395,883.40

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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.