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Finding the Fourth Proportional to 127,260.40, 190,916.20 and 44,137.20

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Solution

The fourth proportional to 127,260.40, 190,916.20 and 44,137.20 is: 66,214.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,260.40 : 190,916.20 = 44,137.20 : x
  2. Step 2: Convert to fraction form
    127,260.40/190,916.20 = 44,137.20/x
  3. Step 3: Cross multiply
    127,260.40x = 190,916.20 × 44,137.20
  4. Step 4: Simplify right side
    127,260.40x = 8,426,506,502.64
  5. Step 5: Solve for x
    x = 8,426,506,502.64/127,260.40
  6. Step 6: Final answer
    x = 66,214.68

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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.