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Finding the Fourth Proportional to 60,403.86, 90,503.46 and 36,981.36

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Solution

The fourth proportional to 60,403.86, 90,503.46 and 36,981.36 is: 55,409.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,403.86 : 90,503.46 = 36,981.36 : x
  2. Step 2: Convert to fraction form
    60,403.86/90,503.46 = 36,981.36/x
  3. Step 3: Cross multiply
    60,403.86x = 90,503.46 × 36,981.36
  4. Step 4: Simplify right side
    60,403.86x = 3,346,941,035.51
  5. Step 5: Solve for x
    x = 3,346,941,035.51/60,403.86
  6. Step 6: Final answer
    x = 55,409.39

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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.