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Finding the Fourth Proportional to 318,950.52, 478,259.72 and 119,106.58

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Solution

The fourth proportional to 318,950.52, 478,259.72 and 119,106.58 is: 178,597.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,950.52 : 478,259.72 = 119,106.58 : x
  2. Step 2: Convert to fraction form
    318,950.52/478,259.72 = 119,106.58/x
  3. Step 3: Cross multiply
    318,950.52x = 478,259.72 × 119,106.58
  4. Step 4: Simplify right side
    318,950.52x = 56,963,879,600.96
  5. Step 5: Solve for x
    x = 56,963,879,600.96/318,950.52
  6. Step 6: Final answer
    x = 178,597.86

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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.