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Finding the Fourth Proportional to 668,664.15, 922,514.37 and 439,344.95

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Solution

The fourth proportional to 668,664.15, 922,514.37 and 439,344.95 is: 606,136.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,664.15 : 922,514.37 = 439,344.95 : x
  2. Step 2: Convert to fraction form
    668,664.15/922,514.37 = 439,344.95/x
  3. Step 3: Cross multiply
    668,664.15x = 922,514.37 × 439,344.95
  4. Step 4: Simplify right side
    668,664.15x = 405,302,023,501.82
  5. Step 5: Solve for x
    x = 405,302,023,501.82/668,664.15
  6. Step 6: Final answer
    x = 606,136.92

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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.