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Finding the Fourth Proportional to 865,242.56, 1,194,027.71 and 478,056.75

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Solution

The fourth proportional to 865,242.56, 1,194,027.71 and 478,056.75 is: 659,714.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,242.56 : 1,194,027.71 = 478,056.75 : x
  2. Step 2: Convert to fraction form
    865,242.56/1,194,027.71 = 478,056.75/x
  3. Step 3: Cross multiply
    865,242.56x = 1,194,027.71 × 478,056.75
  4. Step 4: Simplify right side
    865,242.56x = 570,813,004,062.26
  5. Step 5: Solve for x
    x = 570,813,004,062.26/865,242.56
  6. Step 6: Final answer
    x = 659,714.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.