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Finding the Fourth Proportional to 665,545.44, 918,439.20 and 363,741.60

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Solution

The fourth proportional to 665,545.44, 918,439.20 and 363,741.60 is: 501,956.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,545.44 : 918,439.20 = 363,741.60 : x
  2. Step 2: Convert to fraction form
    665,545.44/918,439.20 = 363,741.60/x
  3. Step 3: Cross multiply
    665,545.44x = 918,439.20 × 363,741.60
  4. Step 4: Simplify right side
    665,545.44x = 334,074,544,110.72
  5. Step 5: Solve for x
    x = 334,074,544,110.72/665,545.44
  6. Step 6: Final answer
    x = 501,956.03

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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.