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Finding the Fourth Proportional to 455,886.60, 683,218.65 and 354,806.71

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Solution

The fourth proportional to 455,886.60, 683,218.65 and 354,806.71 is: 531,734.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,886.60 : 683,218.65 = 354,806.71 : x
  2. Step 2: Convert to fraction form
    455,886.60/683,218.65 = 354,806.71/x
  3. Step 3: Cross multiply
    455,886.60x = 683,218.65 × 354,806.71
  4. Step 4: Simplify right side
    455,886.60x = 242,410,564,882.73
  5. Step 5: Solve for x
    x = 242,410,564,882.73/455,886.60
  6. Step 6: Final answer
    x = 531,734.35

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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.