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Finding the Fourth Proportional to 411,029.40, 616,544.10 and 115,541.40

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Solution

The fourth proportional to 411,029.40, 616,544.10 and 115,541.40 is: 173,312.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,029.40 : 616,544.10 = 115,541.40 : x
  2. Step 2: Convert to fraction form
    411,029.40/616,544.10 = 115,541.40/x
  3. Step 3: Cross multiply
    411,029.40x = 616,544.10 × 115,541.40
  4. Step 4: Simplify right side
    411,029.40x = 71,236,368,475.74
  5. Step 5: Solve for x
    x = 71,236,368,475.74/411,029.40
  6. Step 6: Final answer
    x = 173,312.10

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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.