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Finding the Fourth Proportional to 289,188.61, 399,023.56 and 181,696.36

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Solution

The fourth proportional to 289,188.61, 399,023.56 and 181,696.36 is: 250,705.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,188.61 : 399,023.56 = 181,696.36 : x
  2. Step 2: Convert to fraction form
    289,188.61/399,023.56 = 181,696.36/x
  3. Step 3: Cross multiply
    289,188.61x = 399,023.56 × 181,696.36
  4. Step 4: Simplify right side
    289,188.61x = 72,501,128,894.99
  5. Step 5: Solve for x
    x = 72,501,128,894.99/289,188.61
  6. Step 6: Final answer
    x = 250,705.34

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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.