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Finding the Fourth Proportional to 575,243.60, 862,865.38 and 220,257.60

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Solution

The fourth proportional to 575,243.60, 862,865.38 and 220,257.60 is: 330,386.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,243.60 : 862,865.38 = 220,257.60 : x
  2. Step 2: Convert to fraction form
    575,243.60/862,865.38 = 220,257.60/x
  3. Step 3: Cross multiply
    575,243.60x = 862,865.38 × 220,257.60
  4. Step 4: Simplify right side
    575,243.60x = 190,052,657,721.89
  5. Step 5: Solve for x
    x = 190,052,657,721.89/575,243.60
  6. Step 6: Final answer
    x = 330,386.39

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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.