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Finding the Fourth Proportional to 440,386.05, 617,940.15 and 440,386.05

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Solution

The fourth proportional to 440,386.05, 617,940.15 and 440,386.05 is: 617,940.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,386.05 : 617,940.15 = 440,386.05 : x
  2. Step 2: Convert to fraction form
    440,386.05/617,940.15 = 440,386.05/x
  3. Step 3: Cross multiply
    440,386.05x = 617,940.15 × 440,386.05
  4. Step 4: Simplify right side
    440,386.05x = 272,132,221,794.91
  5. Step 5: Solve for x
    x = 272,132,221,794.91/440,386.05
  6. Step 6: Final answer
    x = 617,940.15

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.