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Finding the Fourth Proportional to 405,437.66, 559,592.79 and 235,769.66

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Solution

The fourth proportional to 405,437.66, 559,592.79 and 235,769.66 is: 325,413.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,437.66 : 559,592.79 = 235,769.66 : x
  2. Step 2: Convert to fraction form
    405,437.66/559,592.79 = 235,769.66/x
  3. Step 3: Cross multiply
    405,437.66x = 559,592.79 × 235,769.66
  4. Step 4: Simplify right side
    405,437.66x = 131,935,001,836.75
  5. Step 5: Solve for x
    x = 131,935,001,836.75/405,437.66
  6. Step 6: Final answer
    x = 325,413.78

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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.