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Finding the Fourth Proportional to 262,466.40, 393,116.40 and 215,810.40

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Solution

The fourth proportional to 262,466.40, 393,116.40 and 215,810.40 is: 323,236.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,466.40 : 393,116.40 = 215,810.40 : x
  2. Step 2: Convert to fraction form
    262,466.40/393,116.40 = 215,810.40/x
  3. Step 3: Cross multiply
    262,466.40x = 393,116.40 × 215,810.40
  4. Step 4: Simplify right side
    262,466.40x = 84,838,607,530.56
  5. Step 5: Solve for x
    x = 84,838,607,530.56/262,466.40
  6. Step 6: Final answer
    x = 323,236.07

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1.5x scale

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.