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Finding the Fourth Proportional to 405,801.57, 560,185.53 and 242,515.68

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Solution

The fourth proportional to 405,801.57, 560,185.53 and 242,515.68 is: 334,778.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,801.57 : 560,185.53 = 242,515.68 : x
  2. Step 2: Convert to fraction form
    405,801.57/560,185.53 = 242,515.68/x
  3. Step 3: Cross multiply
    405,801.57x = 560,185.53 × 242,515.68
  4. Step 4: Simplify right side
    405,801.57x = 135,853,774,734.11
  5. Step 5: Solve for x
    x = 135,853,774,734.11/405,801.57
  6. Step 6: Final answer
    x = 334,778.83

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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.