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Finding the Fourth Proportional to 524,905.20, 787,357.80 and 493,801.20

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Solution

The fourth proportional to 524,905.20, 787,357.80 and 493,801.20 is: 740,701.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,905.20 : 787,357.80 = 493,801.20 : x
  2. Step 2: Convert to fraction form
    524,905.20/787,357.80 = 493,801.20/x
  3. Step 3: Cross multiply
    524,905.20x = 787,357.80 × 493,801.20
  4. Step 4: Simplify right side
    524,905.20x = 388,798,226,469.36
  5. Step 5: Solve for x
    x = 388,798,226,469.36/524,905.20
  6. Step 6: Final answer
    x = 740,701.80

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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.