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Finding the Fourth Proportional to 194,443.94, 291,436.65 and 87,702.95

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Solution

The fourth proportional to 194,443.94, 291,436.65 and 87,702.95 is: 131,451.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,443.94 : 291,436.65 = 87,702.95 : x
  2. Step 2: Convert to fraction form
    194,443.94/291,436.65 = 87,702.95/x
  3. Step 3: Cross multiply
    194,443.94x = 291,436.65 × 87,702.95
  4. Step 4: Simplify right side
    194,443.94x = 25,559,854,671.71
  5. Step 5: Solve for x
    x = 25,559,854,671.71/194,443.94
  6. Step 6: Final answer
    x = 131,451.02

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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.