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Finding the Fourth Proportional to 191,878.70, 287,818.74 and 58,758.41

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Solution

The fourth proportional to 191,878.70, 287,818.74 and 58,758.41 is: 88,137.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,878.70 : 287,818.74 = 58,758.41 : x
  2. Step 2: Convert to fraction form
    191,878.70/287,818.74 = 58,758.41/x
  3. Step 3: Cross multiply
    191,878.70x = 287,818.74 × 58,758.41
  4. Step 4: Simplify right side
    191,878.70x = 16,911,772,250.15
  5. Step 5: Solve for x
    x = 16,911,772,250.15/191,878.70
  6. Step 6: Final answer
    x = 88,137.83

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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.