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Finding the Fourth Proportional to 124,692.40, 187,499.40 and 104,417.20

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Solution

The fourth proportional to 124,692.40, 187,499.40 and 104,417.20 is: 157,011.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,692.40 : 187,499.40 = 104,417.20 : x
  2. Step 2: Convert to fraction form
    124,692.40/187,499.40 = 104,417.20/x
  3. Step 3: Cross multiply
    124,692.40x = 187,499.40 × 104,417.20
  4. Step 4: Simplify right side
    124,692.40x = 19,578,162,349.68
  5. Step 5: Solve for x
    x = 19,578,162,349.68/124,692.40
  6. Step 6: Final answer
    x = 157,011.67

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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.