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Finding the Fourth Proportional to 678,886.92, 937,032.30 and 392,365.62

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Solution

The fourth proportional to 678,886.92, 937,032.30 and 392,365.62 is: 541,561.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,886.92 : 937,032.30 = 392,365.62 : x
  2. Step 2: Convert to fraction form
    678,886.92/937,032.30 = 392,365.62/x
  3. Step 3: Cross multiply
    678,886.92x = 937,032.30 × 392,365.62
  4. Step 4: Simplify right side
    678,886.92x = 367,659,259,349.53
  5. Step 5: Solve for x
    x = 367,659,259,349.53/678,886.92
  6. Step 6: Final answer
    x = 541,561.85

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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.