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Finding the Fourth Proportional to 519,457.12, 778,595.10 and 219,750.64

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Solution

The fourth proportional to 519,457.12, 778,595.10 and 219,750.64 is: 329,376.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,457.12 : 778,595.10 = 219,750.64 : x
  2. Step 2: Convert to fraction form
    519,457.12/778,595.10 = 219,750.64/x
  3. Step 3: Cross multiply
    519,457.12x = 778,595.10 × 219,750.64
  4. Step 4: Simplify right side
    519,457.12x = 171,096,771,525.86
  5. Step 5: Solve for x
    x = 171,096,771,525.86/519,457.12
  6. Step 6: Final answer
    x = 329,376.12

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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.