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Finding the Fourth Proportional to 124,810.80, 186,985.80 and 116,516.40

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Solution

The fourth proportional to 124,810.80, 186,985.80 and 116,516.40 is: 174,559.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,810.80 : 186,985.80 = 116,516.40 : x
  2. Step 2: Convert to fraction form
    124,810.80/186,985.80 = 116,516.40/x
  3. Step 3: Cross multiply
    124,810.80x = 186,985.80 × 116,516.40
  4. Step 4: Simplify right side
    124,810.80x = 21,786,912,267.12
  5. Step 5: Solve for x
    x = 21,786,912,267.12/124,810.80
  6. Step 6: Final answer
    x = 174,559.51

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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.