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Finding the Fourth Proportional to 125,627.40, 188,130.06 and 70,106.76

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Solution

The fourth proportional to 125,627.40, 188,130.06 and 70,106.76 is: 104,986.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,627.40 : 188,130.06 = 70,106.76 : x
  2. Step 2: Convert to fraction form
    125,627.40/188,130.06 = 70,106.76/x
  3. Step 3: Cross multiply
    125,627.40x = 188,130.06 × 70,106.76
  4. Step 4: Simplify right side
    125,627.40x = 13,189,188,965.21
  5. Step 5: Solve for x
    x = 13,189,188,965.21/125,627.40
  6. Step 6: Final answer
    x = 104,986.56

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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.