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Finding the Fourth Proportional to 496,386.20, 744,579.30 and 417,654.20

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Solution

The fourth proportional to 496,386.20, 744,579.30 and 417,654.20 is: 626,481.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,386.20 : 744,579.30 = 417,654.20 : x
  2. Step 2: Convert to fraction form
    496,386.20/744,579.30 = 417,654.20/x
  3. Step 3: Cross multiply
    496,386.20x = 744,579.30 × 417,654.20
  4. Step 4: Simplify right side
    496,386.20x = 310,976,671,878.06
  5. Step 5: Solve for x
    x = 310,976,671,878.06/496,386.20
  6. Step 6: Final answer
    x = 626,481.30

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Half scale
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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.