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Finding the Fourth Proportional to 405,890.94, 560,017.80 and 252,953.94

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Solution

The fourth proportional to 405,890.94, 560,017.80 and 252,953.94 is: 349,006.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,890.94 : 560,017.80 = 252,953.94 : x
  2. Step 2: Convert to fraction form
    405,890.94/560,017.80 = 252,953.94/x
  3. Step 3: Cross multiply
    405,890.94x = 560,017.80 × 252,953.94
  4. Step 4: Simplify right side
    405,890.94x = 141,658,708,980.13
  5. Step 5: Solve for x
    x = 141,658,708,980.13/405,890.94
  6. Step 6: Final answer
    x = 349,006.83

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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.