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Finding the Fourth Proportional to 398,396.88, 549,773.73 and 217,105.11

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Solution

The fourth proportional to 398,396.88, 549,773.73 and 217,105.11 is: 299,597.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,396.88 : 549,773.73 = 217,105.11 : x
  2. Step 2: Convert to fraction form
    398,396.88/549,773.73 = 217,105.11/x
  3. Step 3: Cross multiply
    398,396.88x = 549,773.73 × 217,105.11
  4. Step 4: Simplify right side
    398,396.88x = 119,358,686,126.76
  5. Step 5: Solve for x
    x = 119,358,686,126.76/398,396.88
  6. Step 6: Final answer
    x = 299,597.44

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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.