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Finding the Fourth Proportional to 517,438.30, 776,160.89 and 180,477.69

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Solution

The fourth proportional to 517,438.30, 776,160.89 and 180,477.69 is: 270,717.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,438.30 : 776,160.89 = 180,477.69 : x
  2. Step 2: Convert to fraction form
    517,438.30/776,160.89 = 180,477.69/x
  3. Step 3: Cross multiply
    517,438.30x = 776,160.89 × 180,477.69
  4. Step 4: Simplify right side
    517,438.30x = 140,079,724,495.54
  5. Step 5: Solve for x
    x = 140,079,724,495.54/517,438.30
  6. Step 6: Final answer
    x = 270,717.73

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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.