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Finding the Fourth Proportional to 325,762.20, 488,643.30 and 247,030.20

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Solution

The fourth proportional to 325,762.20, 488,643.30 and 247,030.20 is: 370,545.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,762.20 : 488,643.30 = 247,030.20 : x
  2. Step 2: Convert to fraction form
    325,762.20/488,643.30 = 247,030.20/x
  3. Step 3: Cross multiply
    325,762.20x = 488,643.30 × 247,030.20
  4. Step 4: Simplify right side
    325,762.20x = 120,709,652,127.66
  5. Step 5: Solve for x
    x = 120,709,652,127.66/325,762.20
  6. Step 6: Final answer
    x = 370,545.30

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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.