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Finding the Fourth Proportional to 318,124.45, 438,993.43 and 174,884.46

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Solution

The fourth proportional to 318,124.45, 438,993.43 and 174,884.46 is: 241,330.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,124.45 : 438,993.43 = 174,884.46 : x
  2. Step 2: Convert to fraction form
    318,124.45/438,993.43 = 174,884.46/x
  3. Step 3: Cross multiply
    318,124.45x = 438,993.43 × 174,884.46
  4. Step 4: Simplify right side
    318,124.45x = 76,773,128,949.10
  5. Step 5: Solve for x
    x = 76,773,128,949.10/318,124.45
  6. Step 6: Final answer
    x = 241,330.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.