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Finding the Fourth Proportional to 594,671.96, 821,328.42 and 391,630.50

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Solution

The fourth proportional to 594,671.96, 821,328.42 and 391,630.50 is: 540,898.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    594,671.96 : 821,328.42 = 391,630.50 : x
  2. Step 2: Convert to fraction form
    594,671.96/821,328.42 = 391,630.50/x
  3. Step 3: Cross multiply
    594,671.96x = 821,328.42 × 391,630.50
  4. Step 4: Simplify right side
    594,671.96x = 321,657,259,788.81
  5. Step 5: Solve for x
    x = 321,657,259,788.81/594,671.96
  6. Step 6: Final answer
    x = 540,898.65

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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.