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Finding the Fourth Proportional to 393,444.15, 590,609.70 and 260,583.90

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Solution

The fourth proportional to 393,444.15, 590,609.70 and 260,583.90 is: 391,169.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,444.15 : 590,609.70 = 260,583.90 : x
  2. Step 2: Convert to fraction form
    393,444.15/590,609.70 = 260,583.90/x
  3. Step 3: Cross multiply
    393,444.15x = 590,609.70 × 260,583.90
  4. Step 4: Simplify right side
    393,444.15x = 153,903,379,003.83
  5. Step 5: Solve for x
    x = 153,903,379,003.83/393,444.15
  6. Step 6: Final answer
    x = 391,169.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.