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Finding the Fourth Proportional to 640,016.89, 960,025.02 and 190,726.29

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Solution

The fourth proportional to 640,016.89, 960,025.02 and 190,726.29 is: 286,089.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,016.89 : 960,025.02 = 190,726.29 : x
  2. Step 2: Convert to fraction form
    640,016.89/960,025.02 = 190,726.29/x
  3. Step 3: Cross multiply
    640,016.89x = 960,025.02 × 190,726.29
  4. Step 4: Simplify right side
    640,016.89x = 183,102,010,371.78
  5. Step 5: Solve for x
    x = 183,102,010,371.78/640,016.89
  6. Step 6: Final answer
    x = 286,089.34

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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.