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Finding the Fourth Proportional to 626,538.79, 863,969.97 and 371,840.77

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Solution

The fourth proportional to 626,538.79, 863,969.97 and 371,840.77 is: 512,752.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,538.79 : 863,969.97 = 371,840.77 : x
  2. Step 2: Convert to fraction form
    626,538.79/863,969.97 = 371,840.77/x
  3. Step 3: Cross multiply
    626,538.79x = 863,969.97 × 371,840.77
  4. Step 4: Simplify right side
    626,538.79x = 321,259,258,901.68
  5. Step 5: Solve for x
    x = 321,259,258,901.68/626,538.79
  6. Step 6: Final answer
    x = 512,752.39

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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.