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Finding the Fourth Proportional to 315,716.60, 473,571.30 and 91,069.63

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Solution

The fourth proportional to 315,716.60, 473,571.30 and 91,069.63 is: 136,603.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,716.60 : 473,571.30 = 91,069.63 : x
  2. Step 2: Convert to fraction form
    315,716.60/473,571.30 = 91,069.63/x
  3. Step 3: Cross multiply
    315,716.60x = 473,571.30 × 91,069.63
  4. Step 4: Simplify right side
    315,716.60x = 43,127,962,227.20
  5. Step 5: Solve for x
    x = 43,127,962,227.20/315,716.60
  6. Step 6: Final answer
    x = 136,603.40

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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.