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Finding the Fourth Proportional to 646,793.10, 892,575 and 360,313.92

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Solution

The fourth proportional to 646,793.10, 892,575 and 360,313.92 is: 497,233.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,793.10 : 892,575 = 360,313.92 : x
  2. Step 2: Convert to fraction form
    646,793.10/892,575 = 360,313.92/x
  3. Step 3: Cross multiply
    646,793.10x = 892,575 × 360,313.92
  4. Step 4: Simplify right side
    646,793.10x = 321,607,197,144
  5. Step 5: Solve for x
    x = 321,607,197,144/646,793.10
  6. Step 6: Final answer
    x = 497,233.50

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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.