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Finding the Fourth Proportional to 619,258.70, 928,888.05 and 264,964.70

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Solution

The fourth proportional to 619,258.70, 928,888.05 and 264,964.70 is: 397,447.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,258.70 : 928,888.05 = 264,964.70 : x
  2. Step 2: Convert to fraction form
    619,258.70/928,888.05 = 264,964.70/x
  3. Step 3: Cross multiply
    619,258.70x = 928,888.05 × 264,964.70
  4. Step 4: Simplify right side
    619,258.70x = 246,122,543,501.84
  5. Step 5: Solve for x
    x = 246,122,543,501.84/619,258.70
  6. Step 6: Final answer
    x = 397,447.05

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Half scale
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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.