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Finding the Fourth Proportional to 117,871.60, 176,807.40 and 104,969.20

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Solution

The fourth proportional to 117,871.60, 176,807.40 and 104,969.20 is: 157,453.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,871.60 : 176,807.40 = 104,969.20 : x
  2. Step 2: Convert to fraction form
    117,871.60/176,807.40 = 104,969.20/x
  3. Step 3: Cross multiply
    117,871.60x = 176,807.40 × 104,969.20
  4. Step 4: Simplify right side
    117,871.60x = 18,559,331,332.08
  5. Step 5: Solve for x
    x = 18,559,331,332.08/117,871.60
  6. Step 6: Final answer
    x = 157,453.80

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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.