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Finding the Fourth Proportional to 641,208.60, 961,812.90 and 616,714.20

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Solution

The fourth proportional to 641,208.60, 961,812.90 and 616,714.20 is: 925,071.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,208.60 : 961,812.90 = 616,714.20 : x
  2. Step 2: Convert to fraction form
    641,208.60/961,812.90 = 616,714.20/x
  3. Step 3: Cross multiply
    641,208.60x = 961,812.90 × 616,714.20
  4. Step 4: Simplify right side
    641,208.60x = 593,163,673,173.18
  5. Step 5: Solve for x
    x = 593,163,673,173.18/641,208.60
  6. Step 6: Final answer
    x = 925,071.30

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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.