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Finding the Fourth Proportional to 528,064.80, 792,097.20 and 440,584.80

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Solution

The fourth proportional to 528,064.80, 792,097.20 and 440,584.80 is: 660,877.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,064.80 : 792,097.20 = 440,584.80 : x
  2. Step 2: Convert to fraction form
    528,064.80/792,097.20 = 440,584.80/x
  3. Step 3: Cross multiply
    528,064.80x = 792,097.20 × 440,584.80
  4. Step 4: Simplify right side
    528,064.80x = 348,985,986,442.56
  5. Step 5: Solve for x
    x = 348,985,986,442.56/528,064.80
  6. Step 6: Final answer
    x = 660,877.20

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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.