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Finding the Fourth Proportional to 230,383.98, 317,916.63 and 128,406.06

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Solution

The fourth proportional to 230,383.98, 317,916.63 and 128,406.06 is: 177,192.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,383.98 : 317,916.63 = 128,406.06 : x
  2. Step 2: Convert to fraction form
    230,383.98/317,916.63 = 128,406.06/x
  3. Step 3: Cross multiply
    230,383.98x = 317,916.63 × 128,406.06
  4. Step 4: Simplify right side
    230,383.98x = 40,822,421,866.78
  5. Step 5: Solve for x
    x = 40,822,421,866.78/230,383.98
  6. Step 6: Final answer
    x = 177,192.97

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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.