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Finding the Fourth Proportional to 185,666.76, 256,220.82 and 100,783.89

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Solution

The fourth proportional to 185,666.76, 256,220.82 and 100,783.89 is: 139,082.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,666.76 : 256,220.82 = 100,783.89 : x
  2. Step 2: Convert to fraction form
    185,666.76/256,220.82 = 100,783.89/x
  3. Step 3: Cross multiply
    185,666.76x = 256,220.82 × 100,783.89
  4. Step 4: Simplify right side
    185,666.76x = 25,822,930,938.59
  5. Step 5: Solve for x
    x = 25,822,930,938.59/185,666.76
  6. Step 6: Final answer
    x = 139,082.14

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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.