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Finding the Fourth Proportional to 642,718.49, 964,203.84 and 237,914.24

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Solution

The fourth proportional to 642,718.49, 964,203.84 and 237,914.24 is: 356,918.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,718.49 : 964,203.84 = 237,914.24 : x
  2. Step 2: Convert to fraction form
    642,718.49/964,203.84 = 237,914.24/x
  3. Step 3: Cross multiply
    642,718.49x = 964,203.84 × 237,914.24
  4. Step 4: Simplify right side
    642,718.49x = 229,397,823,798.68
  5. Step 5: Solve for x
    x = 229,397,823,798.68/642,718.49
  6. Step 6: Final answer
    x = 356,918.04

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Half scale
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Double scale
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Similar ratio
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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.