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Finding the Fourth Proportional to 576,928.60, 865,392.90 and 417,496.30

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Solution

The fourth proportional to 576,928.60, 865,392.90 and 417,496.30 is: 626,244.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,928.60 : 865,392.90 = 417,496.30 : x
  2. Step 2: Convert to fraction form
    576,928.60/865,392.90 = 417,496.30/x
  3. Step 3: Cross multiply
    576,928.60x = 865,392.90 × 417,496.30
  4. Step 4: Simplify right side
    576,928.60x = 361,298,333,796.27
  5. Step 5: Solve for x
    x = 361,298,333,796.27/576,928.60
  6. Step 6: Final answer
    x = 626,244.45

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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.