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Finding the Fourth Proportional to 117,903.25, 162,706.35 and 64,188.64

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Solution

The fourth proportional to 117,903.25, 162,706.35 and 64,188.64 is: 88,580.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,903.25 : 162,706.35 = 64,188.64 : x
  2. Step 2: Convert to fraction form
    117,903.25/162,706.35 = 64,188.64/x
  3. Step 3: Cross multiply
    117,903.25x = 162,706.35 × 64,188.64
  4. Step 4: Simplify right side
    117,903.25x = 10,443,899,325.86
  5. Step 5: Solve for x
    x = 10,443,899,325.86/117,903.25
  6. Step 6: Final answer
    x = 88,580.25

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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.