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Finding the Fourth Proportional to 629,757.81, 869,187.11 and 436,689.45

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Solution

The fourth proportional to 629,757.81, 869,187.11 and 436,689.45 is: 602,715.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,757.81 : 869,187.11 = 436,689.45 : x
  2. Step 2: Convert to fraction form
    629,757.81/869,187.11 = 436,689.45/x
  3. Step 3: Cross multiply
    629,757.81x = 869,187.11 × 436,689.45
  4. Step 4: Simplify right side
    629,757.81x = 379,564,838,829.54
  5. Step 5: Solve for x
    x = 379,564,838,829.54/629,757.81
  6. Step 6: Final answer
    x = 602,715.57

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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.