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Finding the Fourth Proportional to 451,642.28, 623,221.44 and 260,717.18

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Solution

The fourth proportional to 451,642.28, 623,221.44 and 260,717.18 is: 359,763.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,642.28 : 623,221.44 = 260,717.18 : x
  2. Step 2: Convert to fraction form
    451,642.28/623,221.44 = 260,717.18/x
  3. Step 3: Cross multiply
    451,642.28x = 623,221.44 × 260,717.18
  4. Step 4: Simplify right side
    451,642.28x = 162,484,536,352.34
  5. Step 5: Solve for x
    x = 162,484,536,352.34/451,642.28
  6. Step 6: Final answer
    x = 359,763.79

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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.