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Finding the Fourth Proportional to 528,516.40, 792,191.40 and 292,028.80

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Solution

The fourth proportional to 528,516.40, 792,191.40 and 292,028.80 is: 437,720.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,516.40 : 792,191.40 = 292,028.80 : x
  2. Step 2: Convert to fraction form
    528,516.40/792,191.40 = 292,028.80/x
  3. Step 3: Cross multiply
    528,516.40x = 792,191.40 × 292,028.80
  4. Step 4: Simplify right side
    528,516.40x = 231,342,703,912.32
  5. Step 5: Solve for x
    x = 231,342,703,912.32/528,516.40
  6. Step 6: Final answer
    x = 437,720.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.