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Finding the Fourth Proportional to 353,113.60, 529,324.80 and 142,470.40

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Solution

The fourth proportional to 353,113.60, 529,324.80 and 142,470.40 is: 213,566.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,113.60 : 529,324.80 = 142,470.40 : x
  2. Step 2: Convert to fraction form
    353,113.60/529,324.80 = 142,470.40/x
  3. Step 3: Cross multiply
    353,113.60x = 529,324.80 × 142,470.40
  4. Step 4: Simplify right side
    353,113.60x = 75,413,115,985.92
  5. Step 5: Solve for x
    x = 75,413,115,985.92/353,113.60
  6. Step 6: Final answer
    x = 213,566.16

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.