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Finding the Fourth Proportional to 702,193.76, 969,696.64 and 663,938.80

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Solution

The fourth proportional to 702,193.76, 969,696.64 and 663,938.80 is: 916,868.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,193.76 : 969,696.64 = 663,938.80 : x
  2. Step 2: Convert to fraction form
    702,193.76/969,696.64 = 663,938.80/x
  3. Step 3: Cross multiply
    702,193.76x = 969,696.64 × 663,938.80
  4. Step 4: Simplify right side
    702,193.76x = 643,819,219,105.75
  5. Step 5: Solve for x
    x = 643,819,219,105.75/702,193.76
  6. Step 6: Final answer
    x = 916,868.33

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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.