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Finding the Fourth Proportional to 124,820.80, 187,000.80 and 116,526.40

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Solution

The fourth proportional to 124,820.80, 187,000.80 and 116,526.40 is: 174,574.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,820.80 : 187,000.80 = 116,526.40 : x
  2. Step 2: Convert to fraction form
    124,820.80/187,000.80 = 116,526.40/x
  3. Step 3: Cross multiply
    124,820.80x = 187,000.80 × 116,526.40
  4. Step 4: Simplify right side
    124,820.80x = 21,790,530,021.12
  5. Step 5: Solve for x
    x = 21,790,530,021.12/124,820.80
  6. Step 6: Final answer
    x = 174,574.51

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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.