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Finding the Fourth Proportional to 478,049.84, 659,683.70 and 263,147.94

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Solution

The fourth proportional to 478,049.84, 659,683.70 and 263,147.94 is: 363,130.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,049.84 : 659,683.70 = 263,147.94 : x
  2. Step 2: Convert to fraction form
    478,049.84/659,683.70 = 263,147.94/x
  3. Step 3: Cross multiply
    478,049.84x = 659,683.70 × 263,147.94
  4. Step 4: Simplify right side
    478,049.84x = 173,594,406,706.58
  5. Step 5: Solve for x
    x = 173,594,406,706.58/478,049.84
  6. Step 6: Final answer
    x = 363,130.35

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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.