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Finding the Fourth Proportional to 289,911.34, 400,076.67 and 162,586.54

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Solution

The fourth proportional to 289,911.34, 400,076.67 and 162,586.54 is: 224,368.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,911.34 : 400,076.67 = 162,586.54 : x
  2. Step 2: Convert to fraction form
    289,911.34/400,076.67 = 162,586.54/x
  3. Step 3: Cross multiply
    289,911.34x = 400,076.67 × 162,586.54
  4. Step 4: Simplify right side
    289,911.34x = 65,047,081,510.02
  5. Step 5: Solve for x
    x = 65,047,081,510.02/289,911.34
  6. Step 6: Final answer
    x = 224,368.88

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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.