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Finding the Fourth Proportional to 405,907.10, 569,514.10 and 405,907.10

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Solution

The fourth proportional to 405,907.10, 569,514.10 and 405,907.10 is: 569,514.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,907.10 : 569,514.10 = 405,907.10 : x
  2. Step 2: Convert to fraction form
    405,907.10/569,514.10 = 405,907.10/x
  3. Step 3: Cross multiply
    405,907.10x = 569,514.10 × 405,907.10
  4. Step 4: Simplify right side
    405,907.10x = 231,169,816,740.11
  5. Step 5: Solve for x
    x = 231,169,816,740.11/405,907.10
  6. Step 6: Final answer
    x = 569,514.10

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.