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Finding the Fourth Proportional to 543,803.60, 815,683.80 and 188,898.32

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Solution

The fourth proportional to 543,803.60, 815,683.80 and 188,898.32 is: 283,339.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,803.60 : 815,683.80 = 188,898.32 : x
  2. Step 2: Convert to fraction form
    543,803.60/815,683.80 = 188,898.32/x
  3. Step 3: Cross multiply
    543,803.60x = 815,683.80 × 188,898.32
  4. Step 4: Simplify right side
    543,803.60x = 154,081,299,471.22
  5. Step 5: Solve for x
    x = 154,081,299,471.22/543,803.60
  6. Step 6: Final answer
    x = 283,339.98

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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.