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Finding the Fourth Proportional to 437,513.57, 656,307.41 and 121,970.78

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Solution

The fourth proportional to 437,513.57, 656,307.41 and 121,970.78 is: 182,966.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,513.57 : 656,307.41 = 121,970.78 : x
  2. Step 2: Convert to fraction form
    437,513.57/656,307.41 = 121,970.78/x
  3. Step 3: Cross multiply
    437,513.57x = 656,307.41 × 121,970.78
  4. Step 4: Simplify right side
    437,513.57x = 80,050,322,826.09
  5. Step 5: Solve for x
    x = 80,050,322,826.09/437,513.57
  6. Step 6: Final answer
    x = 182,966.49

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1.5x scale

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.