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Finding the Fourth Proportional to 590,639.40, 885,959.10 and 404,015.40

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Solution

The fourth proportional to 590,639.40, 885,959.10 and 404,015.40 is: 606,023.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,639.40 : 885,959.10 = 404,015.40 : x
  2. Step 2: Convert to fraction form
    590,639.40/885,959.10 = 404,015.40/x
  3. Step 3: Cross multiply
    590,639.40x = 885,959.10 × 404,015.40
  4. Step 4: Simplify right side
    590,639.40x = 357,941,120,170.14
  5. Step 5: Solve for x
    x = 357,941,120,170.14/590,639.40
  6. Step 6: Final answer
    x = 606,023.10

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