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Finding the Fourth Proportional to 633,422.70, 874,123.38 and 346,943.52

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Solution

The fourth proportional to 633,422.70, 874,123.38 and 346,943.52 is: 478,782.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,422.70 : 874,123.38 = 346,943.52 : x
  2. Step 2: Convert to fraction form
    633,422.70/874,123.38 = 346,943.52/x
  3. Step 3: Cross multiply
    633,422.70x = 874,123.38 × 346,943.52
  4. Step 4: Simplify right side
    633,422.70x = 303,271,442,371.50
  5. Step 5: Solve for x
    x = 303,271,442,371.50/633,422.70
  6. Step 6: Final answer
    x = 478,782.09

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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.