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Finding the Fourth Proportional to 451,643.72, 623,223.42 and 260,718.62

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Solution

The fourth proportional to 451,643.72, 623,223.42 and 260,718.62 is: 359,765.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,643.72 : 623,223.42 = 260,718.62 : x
  2. Step 2: Convert to fraction form
    451,643.72/623,223.42 = 260,718.62/x
  3. Step 3: Cross multiply
    451,643.72x = 623,223.42 × 260,718.62
  4. Step 4: Simplify right side
    451,643.72x = 162,485,950,014.08
  5. Step 5: Solve for x
    x = 162,485,950,014.08/451,643.72
  6. Step 6: Final answer
    x = 359,765.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.