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Finding the Fourth Proportional to 965,402.10, 1,448,103.15 and 255,501.90

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Solution

The fourth proportional to 965,402.10, 1,448,103.15 and 255,501.90 is: 383,252.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    965,402.10 : 1,448,103.15 = 255,501.90 : x
  2. Step 2: Convert to fraction form
    965,402.10/1,448,103.15 = 255,501.90/x
  3. Step 3: Cross multiply
    965,402.10x = 1,448,103.15 × 255,501.90
  4. Step 4: Simplify right side
    965,402.10x = 369,993,106,220.99
  5. Step 5: Solve for x
    x = 369,993,106,220.99/965,402.10
  6. Step 6: Final answer
    x = 383,252.85

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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.