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Finding the Fourth Proportional to 528,565.68, 729,425.98 and 286,850.34

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Solution

The fourth proportional to 528,565.68, 729,425.98 and 286,850.34 is: 395,856.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,565.68 : 729,425.98 = 286,850.34 : x
  2. Step 2: Convert to fraction form
    528,565.68/729,425.98 = 286,850.34/x
  3. Step 3: Cross multiply
    528,565.68x = 729,425.98 × 286,850.34
  4. Step 4: Simplify right side
    528,565.68x = 209,236,090,367.83
  5. Step 5: Solve for x
    x = 209,236,090,367.83/528,565.68
  6. Step 6: Final answer
    x = 395,856.37

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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.