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Finding the Fourth Proportional to 518,564.10, 777,846.15 and 487,071.30

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Solution

The fourth proportional to 518,564.10, 777,846.15 and 487,071.30 is: 730,606.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,564.10 : 777,846.15 = 487,071.30 : x
  2. Step 2: Convert to fraction form
    518,564.10/777,846.15 = 487,071.30/x
  3. Step 3: Cross multiply
    518,564.10x = 777,846.15 × 487,071.30
  4. Step 4: Simplify right side
    518,564.10x = 378,866,535,480.50
  5. Step 5: Solve for x
    x = 378,866,535,480.50/518,564.10
  6. Step 6: Final answer
    x = 730,606.95

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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.