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Finding the Fourth Proportional to 645,843.70, 968,765.55 and 616,813.30

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Solution

The fourth proportional to 645,843.70, 968,765.55 and 616,813.30 is: 925,219.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,843.70 : 968,765.55 = 616,813.30 : x
  2. Step 2: Convert to fraction form
    645,843.70/968,765.55 = 616,813.30/x
  3. Step 3: Cross multiply
    645,843.70x = 968,765.55 × 616,813.30
  4. Step 4: Simplify right side
    645,843.70x = 597,547,475,821.82
  5. Step 5: Solve for x
    x = 597,547,475,821.82/645,843.70
  6. Step 6: Final answer
    x = 925,219.95

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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.