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Finding the Fourth Proportional to 644,514.76, 889,455.64 and 440,992.56

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Solution

The fourth proportional to 644,514.76, 889,455.64 and 440,992.56 is: 608,587.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,514.76 : 889,455.64 = 440,992.56 : x
  2. Step 2: Convert to fraction form
    644,514.76/889,455.64 = 440,992.56/x
  3. Step 3: Cross multiply
    644,514.76x = 889,455.64 × 440,992.56
  4. Step 4: Simplify right side
    644,514.76x = 392,243,319,690.04
  5. Step 5: Solve for x
    x = 392,243,319,690.04/644,514.76
  6. Step 6: Final answer
    x = 608,587.02

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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.