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Finding the Fourth Proportional to 125,574.81, 188,426.79 and 69,404.45

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Solution

The fourth proportional to 125,574.81, 188,426.79 and 69,404.45 is: 104,142.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,574.81 : 188,426.79 = 69,404.45 : x
  2. Step 2: Convert to fraction form
    125,574.81/188,426.79 = 69,404.45/x
  3. Step 3: Cross multiply
    125,574.81x = 188,426.79 × 69,404.45
  4. Step 4: Simplify right side
    125,574.81x = 13,077,657,075.88
  5. Step 5: Solve for x
    x = 13,077,657,075.88/125,574.81
  6. Step 6: Final answer
    x = 104,142.36

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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.