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Finding the Fourth Proportional to 340,340.70, 469,681.11 and 187,395.06

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Solution

The fourth proportional to 340,340.70, 469,681.11 and 187,395.06 is: 258,611.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,340.70 : 469,681.11 = 187,395.06 : x
  2. Step 2: Convert to fraction form
    340,340.70/469,681.11 = 187,395.06/x
  3. Step 3: Cross multiply
    340,340.70x = 469,681.11 × 187,395.06
  4. Step 4: Simplify right side
    340,340.70x = 88,015,919,789.32
  5. Step 5: Solve for x
    x = 88,015,919,789.32/340,340.70
  6. Step 6: Final answer
    x = 258,611.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.