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Finding the Fourth Proportional to 124,634.40, 186,692.40 and 103,898.40

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Solution

The fourth proportional to 124,634.40, 186,692.40 and 103,898.40 is: 155,631.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,634.40 : 186,692.40 = 103,898.40 : x
  2. Step 2: Convert to fraction form
    124,634.40/186,692.40 = 103,898.40/x
  3. Step 3: Cross multiply
    124,634.40x = 186,692.40 × 103,898.40
  4. Step 4: Simplify right side
    124,634.40x = 19,397,041,652.16
  5. Step 5: Solve for x
    x = 19,397,041,652.16/124,634.40
  6. Step 6: Final answer
    x = 155,631.52

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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.