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Finding the Fourth Proportional to 647,430.81, 893,626.83 and 382,448.57

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Solution

The fourth proportional to 647,430.81, 893,626.83 and 382,448.57 is: 527,880.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,430.81 : 893,626.83 = 382,448.57 : x
  2. Step 2: Convert to fraction form
    647,430.81/893,626.83 = 382,448.57/x
  3. Step 3: Cross multiply
    647,430.81x = 893,626.83 × 382,448.57
  4. Step 4: Simplify right side
    647,430.81x = 341,766,299,195.03
  5. Step 5: Solve for x
    x = 341,766,299,195.03/647,430.81
  6. Step 6: Final answer
    x = 527,880.81

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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.