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Finding the Fourth Proportional to 583,205.88, 804,861.18 and 439,712.76

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Solution

The fourth proportional to 583,205.88, 804,861.18 and 439,712.76 is: 606,831.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,205.88 : 804,861.18 = 439,712.76 : x
  2. Step 2: Convert to fraction form
    583,205.88/804,861.18 = 439,712.76/x
  3. Step 3: Cross multiply
    583,205.88x = 804,861.18 × 439,712.76
  4. Step 4: Simplify right side
    583,205.88x = 353,907,730,874.66
  5. Step 5: Solve for x
    x = 353,907,730,874.66/583,205.88
  6. Step 6: Final answer
    x = 606,831.55

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Double scale
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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.