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Finding the Fourth Proportional to 666,242.85, 918,991.85 and 436,815.01

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Solution

The fourth proportional to 666,242.85, 918,991.85 and 436,815.01 is: 602,527.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,242.85 : 918,991.85 = 436,815.01 : x
  2. Step 2: Convert to fraction form
    666,242.85/918,991.85 = 436,815.01/x
  3. Step 3: Cross multiply
    666,242.85x = 918,991.85 × 436,815.01
  4. Step 4: Simplify right side
    666,242.85x = 401,429,434,147.67
  5. Step 5: Solve for x
    x = 401,429,434,147.67/666,242.85
  6. Step 6: Final answer
    x = 602,527.19

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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.