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Finding the Fourth Proportional to 277,207.60, 415,811.40 and 256,212.40

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Solution

The fourth proportional to 277,207.60, 415,811.40 and 256,212.40 is: 384,318.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    277,207.60 : 415,811.40 = 256,212.40 : x
  2. Step 2: Convert to fraction form
    277,207.60/415,811.40 = 256,212.40/x
  3. Step 3: Cross multiply
    277,207.60x = 415,811.40 × 256,212.40
  4. Step 4: Simplify right side
    277,207.60x = 106,536,036,741.36
  5. Step 5: Solve for x
    x = 106,536,036,741.36/277,207.60
  6. Step 6: Final answer
    x = 384,318.60

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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.