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Finding the Fourth Proportional to 561,674.10, 842,511.15 and 404,210.10

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Solution

The fourth proportional to 561,674.10, 842,511.15 and 404,210.10 is: 606,315.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,674.10 : 842,511.15 = 404,210.10 : x
  2. Step 2: Convert to fraction form
    561,674.10/842,511.15 = 404,210.10/x
  3. Step 3: Cross multiply
    561,674.10x = 842,511.15 × 404,210.10
  4. Step 4: Simplify right side
    561,674.10x = 340,551,516,192.62
  5. Step 5: Solve for x
    x = 340,551,516,192.62/561,674.10
  6. Step 6: Final answer
    x = 606,315.15

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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.