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Finding the Fourth Proportional to 543,544.40, 814,927.80 and 243,779.60

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Solution

The fourth proportional to 543,544.40, 814,927.80 and 243,779.60 is: 365,495.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,544.40 : 814,927.80 = 243,779.60 : x
  2. Step 2: Convert to fraction form
    543,544.40/814,927.80 = 243,779.60/x
  3. Step 3: Cross multiply
    543,544.40x = 814,927.80 × 243,779.60
  4. Step 4: Simplify right side
    543,544.40x = 198,662,773,112.88
  5. Step 5: Solve for x
    x = 198,662,773,112.88/543,544.40
  6. Step 6: Final answer
    x = 365,495.02

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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.