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Finding the Fourth Proportional to 473,139.30, 707,980.95 and 348,723.30

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Solution

The fourth proportional to 473,139.30, 707,980.95 and 348,723.30 is: 521,811.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    473,139.30 : 707,980.95 = 348,723.30 : x
  2. Step 2: Convert to fraction form
    473,139.30/707,980.95 = 348,723.30/x
  3. Step 3: Cross multiply
    473,139.30x = 707,980.95 × 348,723.30
  4. Step 4: Simplify right side
    473,139.30x = 246,889,453,221.14
  5. Step 5: Solve for x
    x = 246,889,453,221.14/473,139.30
  6. Step 6: Final answer
    x = 521,811.34

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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.