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Finding the Fourth Proportional to 356,573.43, 534,856.09 and 86,703.10

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Solution

The fourth proportional to 356,573.43, 534,856.09 and 86,703.10 is: 130,053.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,573.43 : 534,856.09 = 86,703.10 : x
  2. Step 2: Convert to fraction form
    356,573.43/534,856.09 = 86,703.10/x
  3. Step 3: Cross multiply
    356,573.43x = 534,856.09 × 86,703.10
  4. Step 4: Simplify right side
    356,573.43x = 46,373,680,840.12
  5. Step 5: Solve for x
    x = 46,373,680,840.12/356,573.43
  6. Step 6: Final answer
    x = 130,053.66

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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.