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Finding the Fourth Proportional to 1,669,892.63, 2,304,456.28 and 905,946.19

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Solution

The fourth proportional to 1,669,892.63, 2,304,456.28 and 905,946.19 is: 1,250,208.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,669,892.63 : 2,304,456.28 = 905,946.19 : x
  2. Step 2: Convert to fraction form
    1,669,892.63/2,304,456.28 = 905,946.19/x
  3. Step 3: Cross multiply
    1,669,892.63x = 2,304,456.28 × 905,946.19
  4. Step 4: Simplify right side
    1,669,892.63x = 2,087,713,378,861.57
  5. Step 5: Solve for x
    x = 2,087,713,378,861.57/1,669,892.63
  6. Step 6: Final answer
    x = 1,250,208.16

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.