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Finding the Fourth Proportional to 289,172.90, 399,010.98 and 181,666.82

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Solution

The fourth proportional to 289,172.90, 399,010.98 and 181,666.82 is: 250,670.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,172.90 : 399,010.98 = 181,666.82 : x
  2. Step 2: Convert to fraction form
    289,172.90/399,010.98 = 181,666.82/x
  3. Step 3: Cross multiply
    289,172.90x = 399,010.98 × 181,666.82
  4. Step 4: Simplify right side
    289,172.90x = 72,487,055,881.68
  5. Step 5: Solve for x
    x = 72,487,055,881.68/289,172.90
  6. Step 6: Final answer
    x = 250,670.29

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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.