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Finding the Fourth Proportional to 315,720.83, 473,524.31 and 91,026.07

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Solution

The fourth proportional to 315,720.83, 473,524.31 and 91,026.07 is: 136,522.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,720.83 : 473,524.31 = 91,026.07 : x
  2. Step 2: Convert to fraction form
    315,720.83/473,524.31 = 91,026.07/x
  3. Step 3: Cross multiply
    315,720.83x = 473,524.31 × 91,026.07
  4. Step 4: Simplify right side
    315,720.83x = 43,103,056,988.76
  5. Step 5: Solve for x
    x = 43,103,056,988.76/315,720.83
  6. Step 6: Final answer
    x = 136,522.69

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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.