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Finding the Fourth Proportional to 621,855.40, 932,783.10 and 497,439.40

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Solution

The fourth proportional to 621,855.40, 932,783.10 and 497,439.40 is: 746,159.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,855.40 : 932,783.10 = 497,439.40 : x
  2. Step 2: Convert to fraction form
    621,855.40/932,783.10 = 497,439.40/x
  3. Step 3: Cross multiply
    621,855.40x = 932,783.10 × 497,439.40
  4. Step 4: Simplify right side
    621,855.40x = 464,003,065,594.14
  5. Step 5: Solve for x
    x = 464,003,065,594.14/621,855.40
  6. Step 6: Final answer
    x = 746,159.10

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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.