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Finding the Fourth Proportional to 318,348.48, 477,411.93 and 118,559.85

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Solution

The fourth proportional to 318,348.48, 477,411.93 and 118,559.85 is: 177,798.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,348.48 : 477,411.93 = 118,559.85 : x
  2. Step 2: Convert to fraction form
    318,348.48/477,411.93 = 118,559.85/x
  3. Step 3: Cross multiply
    318,348.48x = 477,411.93 × 118,559.85
  4. Step 4: Simplify right side
    318,348.48x = 56,601,886,809.01
  5. Step 5: Solve for x
    x = 56,601,886,809.01/318,348.48
  6. Step 6: Final answer
    x = 177,798.51

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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.