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Finding the Fourth Proportional to 710,958.40, 1,066,898.40 and 411,438.40

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Solution

The fourth proportional to 710,958.40, 1,066,898.40 and 411,438.40 is: 617,424.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,958.40 : 1,066,898.40 = 411,438.40 : x
  2. Step 2: Convert to fraction form
    710,958.40/1,066,898.40 = 411,438.40/x
  3. Step 3: Cross multiply
    710,958.40x = 1,066,898.40 × 411,438.40
  4. Step 4: Simplify right side
    710,958.40x = 438,962,970,658.56
  5. Step 5: Solve for x
    x = 438,962,970,658.56/710,958.40
  6. Step 6: Final answer
    x = 617,424.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.