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Finding the Fourth Proportional to 496,486.80, 744,827.40 and 212,176.80

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Solution

The fourth proportional to 496,486.80, 744,827.40 and 212,176.80 is: 318,306.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,486.80 : 744,827.40 = 212,176.80 : x
  2. Step 2: Convert to fraction form
    496,486.80/744,827.40 = 212,176.80/x
  3. Step 3: Cross multiply
    496,486.80x = 744,827.40 × 212,176.80
  4. Step 4: Simplify right side
    496,486.80x = 158,035,094,284.32
  5. Step 5: Solve for x
    x = 158,035,094,284.32/496,486.80
  6. Step 6: Final answer
    x = 318,306.74

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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.