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Finding the Fourth Proportional to 447,061.17, 616,960.60 and 256,111.47

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Solution

The fourth proportional to 447,061.17, 616,960.60 and 256,111.47 is: 353,443.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,061.17 : 616,960.60 = 256,111.47 : x
  2. Step 2: Convert to fraction form
    447,061.17/616,960.60 = 256,111.47/x
  3. Step 3: Cross multiply
    447,061.17x = 616,960.60 × 256,111.47
  4. Step 4: Simplify right side
    447,061.17x = 158,010,685,557.80
  5. Step 5: Solve for x
    x = 158,010,685,557.80/447,061.17
  6. Step 6: Final answer
    x = 353,443.10

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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.