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Finding the Fourth Proportional to 194,880.80, 291,802.80 and 124,378.40

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Solution

The fourth proportional to 194,880.80, 291,802.80 and 124,378.40 is: 186,236.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,880.80 : 291,802.80 = 124,378.40 : x
  2. Step 2: Convert to fraction form
    194,880.80/291,802.80 = 124,378.40/x
  3. Step 3: Cross multiply
    194,880.80x = 291,802.80 × 124,378.40
  4. Step 4: Simplify right side
    194,880.80x = 36,293,965,379.52
  5. Step 5: Solve for x
    x = 36,293,965,379.52/194,880.80
  6. Step 6: Final answer
    x = 186,236.74

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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.