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Finding the Fourth Proportional to 104,656.60, 156,984.90 and 92,409.40

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Solution

The fourth proportional to 104,656.60, 156,984.90 and 92,409.40 is: 138,614.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,656.60 : 156,984.90 = 92,409.40 : x
  2. Step 2: Convert to fraction form
    104,656.60/156,984.90 = 92,409.40/x
  3. Step 3: Cross multiply
    104,656.60x = 156,984.90 × 92,409.40
  4. Step 4: Simplify right side
    104,656.60x = 14,506,880,418.06
  5. Step 5: Solve for x
    x = 14,506,880,418.06/104,656.60
  6. Step 6: Final answer
    x = 138,614.10

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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.