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Finding the Fourth Proportional to 73,203.61, 109,831.76 and 28,805.77

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Solution

The fourth proportional to 73,203.61, 109,831.76 and 28,805.77 is: 43,219.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,203.61 : 109,831.76 = 28,805.77 : x
  2. Step 2: Convert to fraction form
    73,203.61/109,831.76 = 28,805.77/x
  3. Step 3: Cross multiply
    73,203.61x = 109,831.76 × 28,805.77
  4. Step 4: Simplify right side
    73,203.61x = 3,163,788,417.26
  5. Step 5: Solve for x
    x = 3,163,788,417.26/73,203.61
  6. Step 6: Final answer
    x = 43,219.02

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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.