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Finding the Fourth Proportional to 445,640.34, 614,984.69 and 254,653.28

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Solution

The fourth proportional to 445,640.34, 614,984.69 and 254,653.28 is: 351,422.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,640.34 : 614,984.69 = 254,653.28 : x
  2. Step 2: Convert to fraction form
    445,640.34/614,984.69 = 254,653.28/x
  3. Step 3: Cross multiply
    445,640.34x = 614,984.69 × 254,653.28
  4. Step 4: Simplify right side
    445,640.34x = 156,607,866,893.76
  5. Step 5: Solve for x
    x = 156,607,866,893.76/445,640.34
  6. Step 6: Final answer
    x = 351,422.10

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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.