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Finding the Fourth Proportional to 488,568.81, 733,685.65 and 318,080.93

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Solution

The fourth proportional to 488,568.81, 733,685.65 and 318,080.93 is: 477,663.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,568.81 : 733,685.65 = 318,080.93 : x
  2. Step 2: Convert to fraction form
    488,568.81/733,685.65 = 318,080.93/x
  3. Step 3: Cross multiply
    488,568.81x = 733,685.65 × 318,080.93
  4. Step 4: Simplify right side
    488,568.81x = 233,371,409,416.02
  5. Step 5: Solve for x
    x = 233,371,409,416.02/488,568.81
  6. Step 6: Final answer
    x = 477,663.34

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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.