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Finding the Fourth Proportional to 470,851.20, 706,276.80 and 411,802.20

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Solution

The fourth proportional to 470,851.20, 706,276.80 and 411,802.20 is: 617,703.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,851.20 : 706,276.80 = 411,802.20 : x
  2. Step 2: Convert to fraction form
    470,851.20/706,276.80 = 411,802.20/x
  3. Step 3: Cross multiply
    470,851.20x = 706,276.80 × 411,802.20
  4. Step 4: Simplify right side
    470,851.20x = 290,846,340,048.96
  5. Step 5: Solve for x
    x = 290,846,340,048.96/470,851.20
  6. Step 6: Final answer
    x = 617,703.30

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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.