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Finding the Fourth Proportional to 621,857.40, 932,786.10 and 497,441.40

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Solution

The fourth proportional to 621,857.40, 932,786.10 and 497,441.40 is: 746,162.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,857.40 : 932,786.10 = 497,441.40 : x
  2. Step 2: Convert to fraction form
    621,857.40/932,786.10 = 497,441.40/x
  3. Step 3: Cross multiply
    621,857.40x = 932,786.10 × 497,441.40
  4. Step 4: Simplify right side
    621,857.40x = 464,006,423,484.54
  5. Step 5: Solve for x
    x = 464,006,423,484.54/621,857.40
  6. Step 6: Final answer
    x = 746,162.10

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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.