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Finding the Fourth Proportional to 470,615.52, 649,455.57 and 255,758.97

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Solution

The fourth proportional to 470,615.52, 649,455.57 and 255,758.97 is: 352,950.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,615.52 : 649,455.57 = 255,758.97 : x
  2. Step 2: Convert to fraction form
    470,615.52/649,455.57 = 255,758.97/x
  3. Step 3: Cross multiply
    470,615.52x = 649,455.57 × 255,758.97
  4. Step 4: Simplify right side
    470,615.52x = 166,104,087,643.96
  5. Step 5: Solve for x
    x = 166,104,087,643.96/470,615.52
  6. Step 6: Final answer
    x = 352,950.72

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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.