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Finding the Fourth Proportional to 190,605.74, 285,547.74 and 127,234.78

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Solution

The fourth proportional to 190,605.74, 285,547.74 and 127,234.78 is: 190,611.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,605.74 : 285,547.74 = 127,234.78 : x
  2. Step 2: Convert to fraction form
    190,605.74/285,547.74 = 127,234.78/x
  3. Step 3: Cross multiply
    190,605.74x = 285,547.74 × 127,234.78
  4. Step 4: Simplify right side
    190,605.74x = 36,331,603,878.40
  5. Step 5: Solve for x
    x = 36,331,603,878.40/190,605.74
  6. Step 6: Final answer
    x = 190,611.28

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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.