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Finding the Fourth Proportional to 117,780.60, 176,411.70 and 104,647.80

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Solution

The fourth proportional to 117,780.60, 176,411.70 and 104,647.80 is: 156,741.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,780.60 : 176,411.70 = 104,647.80 : x
  2. Step 2: Convert to fraction form
    117,780.60/176,411.70 = 104,647.80/x
  3. Step 3: Cross multiply
    117,780.60x = 176,411.70 × 104,647.80
  4. Step 4: Simplify right side
    117,780.60x = 18,461,096,299.26
  5. Step 5: Solve for x
    x = 18,461,096,299.26/117,780.60
  6. Step 6: Final answer
    x = 156,741.40

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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.