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Finding the Fourth Proportional to 666,385.48, 999,578.22 and 193,071.16

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Solution

The fourth proportional to 666,385.48, 999,578.22 and 193,071.16 is: 289,606.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,385.48 : 999,578.22 = 193,071.16 : x
  2. Step 2: Convert to fraction form
    666,385.48/999,578.22 = 193,071.16/x
  3. Step 3: Cross multiply
    666,385.48x = 999,578.22 × 193,071.16
  4. Step 4: Simplify right side
    666,385.48x = 192,989,726,446.14
  5. Step 5: Solve for x
    x = 192,989,726,446.14/666,385.48
  6. Step 6: Final answer
    x = 289,606.74

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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.