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Finding the Fourth Proportional to 117,988.84, 162,822.72 and 64,274.50

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Solution

The fourth proportional to 117,988.84, 162,822.72 and 64,274.50 is: 88,697.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,988.84 : 162,822.72 = 64,274.50 : x
  2. Step 2: Convert to fraction form
    117,988.84/162,822.72 = 64,274.50/x
  3. Step 3: Cross multiply
    117,988.84x = 162,822.72 × 64,274.50
  4. Step 4: Simplify right side
    117,988.84x = 10,465,348,916.64
  5. Step 5: Solve for x
    x = 10,465,348,916.64/117,988.84
  6. Step 6: Final answer
    x = 88,697.79

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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.