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Finding the Fourth Proportional to 612,986.62, 919,514.51 and 186,536.34

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Solution

The fourth proportional to 612,986.62, 919,514.51 and 186,536.34 is: 279,815.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,986.62 : 919,514.51 = 186,536.34 : x
  2. Step 2: Convert to fraction form
    612,986.62/919,514.51 = 186,536.34/x
  3. Step 3: Cross multiply
    612,986.62x = 919,514.51 × 186,536.34
  4. Step 4: Simplify right side
    612,986.62x = 171,522,875,186.81
  5. Step 5: Solve for x
    x = 171,522,875,186.81/612,986.62
  6. Step 6: Final answer
    x = 279,815.04

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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.