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Finding the Fourth Proportional to 528,515.40, 792,189.90 and 292,027.80

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Solution

The fourth proportional to 528,515.40, 792,189.90 and 292,027.80 is: 437,719.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,515.40 : 792,189.90 = 292,027.80 : x
  2. Step 2: Convert to fraction form
    528,515.40/792,189.90 = 292,027.80/x
  3. Step 3: Cross multiply
    528,515.40x = 792,189.90 × 292,027.80
  4. Step 4: Simplify right side
    528,515.40x = 231,341,473,679.22
  5. Step 5: Solve for x
    x = 231,341,473,679.22/528,515.40
  6. Step 6: Final answer
    x = 437,719.46

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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.