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Finding the Fourth Proportional to 517,870.60, 776,489.10 and 201,963.40

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Solution

The fourth proportional to 517,870.60, 776,489.10 and 201,963.40 is: 302,821.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,870.60 : 776,489.10 = 201,963.40 : x
  2. Step 2: Convert to fraction form
    517,870.60/776,489.10 = 201,963.40/x
  3. Step 3: Cross multiply
    517,870.60x = 776,489.10 × 201,963.40
  4. Step 4: Simplify right side
    517,870.60x = 156,822,378,698.94
  5. Step 5: Solve for x
    x = 156,822,378,698.94/517,870.60
  6. Step 6: Final answer
    x = 302,821.55

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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.