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Finding the Fourth Proportional to 385,943.60, 532,602.15 and 235,040.60

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Solution

The fourth proportional to 385,943.60, 532,602.15 and 235,040.60 is: 324,356.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,943.60 : 532,602.15 = 235,040.60 : x
  2. Step 2: Convert to fraction form
    385,943.60/532,602.15 = 235,040.60/x
  3. Step 3: Cross multiply
    385,943.60x = 532,602.15 × 235,040.60
  4. Step 4: Simplify right side
    385,943.60x = 125,183,128,897.29
  5. Step 5: Solve for x
    x = 125,183,128,897.29/385,943.60
  6. Step 6: Final answer
    x = 324,356.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.