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Finding the Fourth Proportional to 528,081.40, 792,122.10 and 243,771.40

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Solution

The fourth proportional to 528,081.40, 792,122.10 and 243,771.40 is: 365,657.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,081.40 : 792,122.10 = 243,771.40 : x
  2. Step 2: Convert to fraction form
    528,081.40/792,122.10 = 243,771.40/x
  3. Step 3: Cross multiply
    528,081.40x = 792,122.10 × 243,771.40
  4. Step 4: Simplify right side
    528,081.40x = 193,096,713,287.94
  5. Step 5: Solve for x
    x = 193,096,713,287.94/528,081.40
  6. Step 6: Final answer
    x = 365,657.10

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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.