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Finding the Fourth Proportional to 405,222.40, 559,206.40 and 226,374.40

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Solution

The fourth proportional to 405,222.40, 559,206.40 and 226,374.40 is: 312,396.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,222.40 : 559,206.40 = 226,374.40 : x
  2. Step 2: Convert to fraction form
    405,222.40/559,206.40 = 226,374.40/x
  3. Step 3: Cross multiply
    405,222.40x = 559,206.40 × 226,374.40
  4. Step 4: Simplify right side
    405,222.40x = 126,590,013,276.16
  5. Step 5: Solve for x
    x = 126,590,013,276.16/405,222.40
  6. Step 6: Final answer
    x = 312,396.39

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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.