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Finding the Fourth Proportional to 318,647.93, 477,807.26 and 93,979.76

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Solution

The fourth proportional to 318,647.93, 477,807.26 and 93,979.76 is: 140,921.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,647.93 : 477,807.26 = 93,979.76 : x
  2. Step 2: Convert to fraction form
    318,647.93/477,807.26 = 93,979.76/x
  3. Step 3: Cross multiply
    318,647.93x = 477,807.26 × 93,979.76
  4. Step 4: Simplify right side
    318,647.93x = 44,904,208,762.12
  5. Step 5: Solve for x
    x = 44,904,208,762.12/318,647.93
  6. Step 6: Final answer
    x = 140,921.08

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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.