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Finding the Fourth Proportional to 317,681.82, 438,440.40 and 181,696.91

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Solution

The fourth proportional to 317,681.82, 438,440.40 and 181,696.91 is: 250,764.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,681.82 : 438,440.40 = 181,696.91 : x
  2. Step 2: Convert to fraction form
    317,681.82/438,440.40 = 181,696.91/x
  3. Step 3: Cross multiply
    317,681.82x = 438,440.40 × 181,696.91
  4. Step 4: Simplify right side
    317,681.82x = 79,663,263,706.96
  5. Step 5: Solve for x
    x = 79,663,263,706.96/317,681.82
  6. Step 6: Final answer
    x = 250,764.31

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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.