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Finding the Fourth Proportional to 528,043.90, 792,065.85 and 291,847.90

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Solution

The fourth proportional to 528,043.90, 792,065.85 and 291,847.90 is: 437,771.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,043.90 : 792,065.85 = 291,847.90 : x
  2. Step 2: Convert to fraction form
    528,043.90/792,065.85 = 291,847.90/x
  3. Step 3: Cross multiply
    528,043.90x = 792,065.85 × 291,847.90
  4. Step 4: Simplify right side
    528,043.90x = 231,162,754,984.22
  5. Step 5: Solve for x
    x = 231,162,754,984.22/528,043.90
  6. Step 6: Final answer
    x = 437,771.85

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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.