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Finding the Fourth Proportional to 6,190,643.70, 9,285,965.55 and 1,930,805.10

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Solution

The fourth proportional to 6,190,643.70, 9,285,965.55 and 1,930,805.10 is: 2,896,207.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,190,643.70 : 9,285,965.55 = 1,930,805.10 : x
  2. Step 2: Convert to fraction form
    6,190,643.70/9,285,965.55 = 1,930,805.10/x
  3. Step 3: Cross multiply
    6,190,643.70x = 9,285,965.55 × 1,930,805.10
  4. Step 4: Simplify right side
    6,190,643.70x = 17,929,389,642,364.31
  5. Step 5: Solve for x
    x = 17,929,389,642,364.31/6,190,643.70
  6. Step 6: Final answer
    x = 2,896,207.65

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Double scale
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Similar ratio
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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.