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Finding the Fourth Proportional to 279,499.33, 385,763.68 and 177,643.45

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Solution

The fourth proportional to 279,499.33, 385,763.68 and 177,643.45 is: 245,182.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,499.33 : 385,763.68 = 177,643.45 : x
  2. Step 2: Convert to fraction form
    279,499.33/385,763.68 = 177,643.45/x
  3. Step 3: Cross multiply
    279,499.33x = 385,763.68 × 177,643.45
  4. Step 4: Simplify right side
    279,499.33x = 68,528,390,999.90
  5. Step 5: Solve for x
    x = 68,528,390,999.90/279,499.33
  6. Step 6: Final answer
    x = 245,182.67

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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.