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Finding the Fourth Proportional to 447,060.48, 616,931.16 and 245,856.48

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Solution

The fourth proportional to 447,060.48, 616,931.16 and 245,856.48 is: 339,275.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,060.48 : 616,931.16 = 245,856.48 : x
  2. Step 2: Convert to fraction form
    447,060.48/616,931.16 = 245,856.48/x
  3. Step 3: Cross multiply
    447,060.48x = 616,931.16 × 245,856.48
  4. Step 4: Simplify right side
    447,060.48x = 151,676,523,399.92
  5. Step 5: Solve for x
    x = 151,676,523,399.92/447,060.48
  6. Step 6: Final answer
    x = 339,275.18

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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.