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Finding the Fourth Proportional to 519,867.67, 779,801.51 and 220,341.55

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Solution

The fourth proportional to 519,867.67, 779,801.51 and 220,341.55 is: 330,512.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,867.67 : 779,801.51 = 220,341.55 : x
  2. Step 2: Convert to fraction form
    519,867.67/779,801.51 = 220,341.55/x
  3. Step 3: Cross multiply
    519,867.67x = 779,801.51 × 220,341.55
  4. Step 4: Simplify right side
    519,867.67x = 171,822,672,304.03
  5. Step 5: Solve for x
    x = 171,822,672,304.03/519,867.67
  6. Step 6: Final answer
    x = 330,512.33

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Half scale
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Double scale
Find fourth proportional to 519,868.67, 779,803.01 and 220,342.55
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.