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Finding the Fourth Proportional to 118,298.56, 163,216.64 and 75,783.04

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Solution

The fourth proportional to 118,298.56, 163,216.64 and 75,783.04 is: 104,557.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,298.56 : 163,216.64 = 75,783.04 : x
  2. Step 2: Convert to fraction form
    118,298.56/163,216.64 = 75,783.04/x
  3. Step 3: Cross multiply
    118,298.56x = 163,216.64 × 75,783.04
  4. Step 4: Simplify right side
    118,298.56x = 12,369,053,157.79
  5. Step 5: Solve for x
    x = 12,369,053,157.79/118,298.56
  6. Step 6: Final answer
    x = 104,557.94

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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.