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Finding the Fourth Proportional to 528,086.55, 792,129.83 and 440,606.55

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Solution

The fourth proportional to 528,086.55, 792,129.83 and 440,606.55 is: 660,909.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,086.55 : 792,129.83 = 440,606.55 : x
  2. Step 2: Convert to fraction form
    528,086.55/792,129.83 = 440,606.55/x
  3. Step 3: Cross multiply
    528,086.55x = 792,129.83 × 440,606.55
  4. Step 4: Simplify right side
    528,086.55x = 349,017,589,345.35
  5. Step 5: Solve for x
    x = 349,017,589,345.35/528,086.55
  6. Step 6: Final answer
    x = 660,909.83

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Double scale
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Similar ratio
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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.