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Finding the Fourth Proportional to 236,813.76, 326,802.60 and 129,383.76

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Solution

The fourth proportional to 236,813.76, 326,802.60 and 129,383.76 is: 178,549.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,813.76 : 326,802.60 = 129,383.76 : x
  2. Step 2: Convert to fraction form
    236,813.76/326,802.60 = 129,383.76/x
  3. Step 3: Cross multiply
    236,813.76x = 326,802.60 × 129,383.76
  4. Step 4: Simplify right side
    236,813.76x = 42,282,950,391.29
  5. Step 5: Solve for x
    x = 42,282,950,391.29/236,813.76
  6. Step 6: Final answer
    x = 178,549.38

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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.