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Finding the Fourth Proportional to 663,114.39, 915,085.53 and 368,782.17

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Solution

The fourth proportional to 663,114.39, 915,085.53 and 368,782.17 is: 508,912.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,114.39 : 915,085.53 = 368,782.17 : x
  2. Step 2: Convert to fraction form
    663,114.39/915,085.53 = 368,782.17/x
  3. Step 3: Cross multiply
    663,114.39x = 915,085.53 × 368,782.17
  4. Step 4: Simplify right side
    663,114.39x = 337,467,227,489.00
  5. Step 5: Solve for x
    x = 337,467,227,489.00/663,114.39
  6. Step 6: Final answer
    x = 508,912.54

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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.