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Finding the Fourth Proportional to 185,396.40, 278,075.34 and 125,807.40

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Solution

The fourth proportional to 185,396.40, 278,075.34 and 125,807.40 is: 188,698.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,396.40 : 278,075.34 = 125,807.40 : x
  2. Step 2: Convert to fraction form
    185,396.40/278,075.34 = 125,807.40/x
  3. Step 3: Cross multiply
    185,396.40x = 278,075.34 × 125,807.40
  4. Step 4: Simplify right side
    185,396.40x = 34,983,935,529.52
  5. Step 5: Solve for x
    x = 34,983,935,529.52/185,396.40
  6. Step 6: Final answer
    x = 188,698.03

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1.5x scale

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.