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Finding the Fourth Proportional to 580,518.50, 801,112.43 and 318,878.96

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Solution

The fourth proportional to 580,518.50, 801,112.43 and 318,878.96 is: 440,051.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,518.50 : 801,112.43 = 318,878.96 : x
  2. Step 2: Convert to fraction form
    580,518.50/801,112.43 = 318,878.96/x
  3. Step 3: Cross multiply
    580,518.50x = 801,112.43 × 318,878.96
  4. Step 4: Simplify right side
    580,518.50x = 255,457,896,927.08
  5. Step 5: Solve for x
    x = 255,457,896,927.08/580,518.50
  6. Step 6: Final answer
    x = 440,051.26

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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.