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Finding the Fourth Proportional to 256,134.99, 384,473.03 and 143,911.11

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Solution

The fourth proportional to 256,134.99, 384,473.03 and 143,911.11 is: 216,018.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,134.99 : 384,473.03 = 143,911.11 : x
  2. Step 2: Convert to fraction form
    256,134.99/384,473.03 = 143,911.11/x
  3. Step 3: Cross multiply
    256,134.99x = 384,473.03 × 143,911.11
  4. Step 4: Simplify right side
    256,134.99x = 55,329,939,792.81
  5. Step 5: Solve for x
    x = 55,329,939,792.81/256,134.99
  6. Step 6: Final answer
    x = 216,018.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.