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Finding the Fourth Proportional to 104,704.40, 156,672.60 and 77,056.40

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Solution

The fourth proportional to 104,704.40, 156,672.60 and 77,056.40 is: 115,302.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,704.40 : 156,672.60 = 77,056.40 : x
  2. Step 2: Convert to fraction form
    104,704.40/156,672.60 = 77,056.40/x
  3. Step 3: Cross multiply
    104,704.40x = 156,672.60 × 77,056.40
  4. Step 4: Simplify right side
    104,704.40x = 12,072,626,534.64
  5. Step 5: Solve for x
    x = 12,072,626,534.64/104,704.40
  6. Step 6: Final answer
    x = 115,302.00

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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.