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Finding the Fourth Proportional to 649,215.14, 895,963.24 and 358,820.48

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Solution

The fourth proportional to 649,215.14, 895,963.24 and 358,820.48 is: 495,197.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,215.14 : 895,963.24 = 358,820.48 : x
  2. Step 2: Convert to fraction form
    649,215.14/895,963.24 = 358,820.48/x
  3. Step 3: Cross multiply
    649,215.14x = 895,963.24 × 358,820.48
  4. Step 4: Simplify right side
    649,215.14x = 321,489,962,527.59
  5. Step 5: Solve for x
    x = 321,489,962,527.59/649,215.14
  6. Step 6: Final answer
    x = 495,197.89

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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.