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Finding the Fourth Proportional to 118,497.76, 163,525.80 and 64,782.61

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Solution

The fourth proportional to 118,497.76, 163,525.80 and 64,782.61 is: 89,399.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,497.76 : 163,525.80 = 64,782.61 : x
  2. Step 2: Convert to fraction form
    118,497.76/163,525.80 = 64,782.61/x
  3. Step 3: Cross multiply
    118,497.76x = 163,525.80 × 64,782.61
  4. Step 4: Simplify right side
    118,497.76x = 10,593,628,126.34
  5. Step 5: Solve for x
    x = 10,593,628,126.34/118,497.76
  6. Step 6: Final answer
    x = 89,399.40

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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.