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Finding the Fourth Proportional to 358,439.76, 493,579.12 and 350,483.72

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Solution

The fourth proportional to 358,439.76, 493,579.12 and 350,483.72 is: 482,623.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,439.76 : 493,579.12 = 350,483.72 : x
  2. Step 2: Convert to fraction form
    358,439.76/493,579.12 = 350,483.72/x
  3. Step 3: Cross multiply
    358,439.76x = 493,579.12 × 350,483.72
  4. Step 4: Simplify right side
    358,439.76x = 172,991,446,091.93
  5. Step 5: Solve for x
    x = 172,991,446,091.93/358,439.76
  6. Step 6: Final answer
    x = 482,623.48

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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.