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Finding the Fourth Proportional to 478,326.99, 717,241.23 and 178,561.02

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Solution

The fourth proportional to 478,326.99, 717,241.23 and 178,561.02 is: 267,748.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,326.99 : 717,241.23 = 178,561.02 : x
  2. Step 2: Convert to fraction form
    478,326.99/717,241.23 = 178,561.02/x
  3. Step 3: Cross multiply
    478,326.99x = 717,241.23 × 178,561.02
  4. Step 4: Simplify right side
    478,326.99x = 128,071,325,614.86
  5. Step 5: Solve for x
    x = 128,071,325,614.86/478,326.99
  6. Step 6: Final answer
    x = 267,748.48

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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.