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Finding the Fourth Proportional to 556,376.70, 834,431.40 and 157,054.80

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Solution

The fourth proportional to 556,376.70, 834,431.40 and 157,054.80 is: 235,544.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,376.70 : 834,431.40 = 157,054.80 : x
  2. Step 2: Convert to fraction form
    556,376.70/834,431.40 = 157,054.80/x
  3. Step 3: Cross multiply
    556,376.70x = 834,431.40 × 157,054.80
  4. Step 4: Simplify right side
    556,376.70x = 131,051,456,640.72
  5. Step 5: Solve for x
    x = 131,051,456,640.72/556,376.70
  6. Step 6: Final answer
    x = 235,544.47

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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.