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Finding the Fourth Proportional to 737,715.60, 1,105,212.60 and 421,232.40

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Solution

The fourth proportional to 737,715.60, 1,105,212.60 and 421,232.40 is: 631,071.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    737,715.60 : 1,105,212.60 = 421,232.40 : x
  2. Step 2: Convert to fraction form
    737,715.60/1,105,212.60 = 421,232.40/x
  3. Step 3: Cross multiply
    737,715.60x = 1,105,212.60 × 421,232.40
  4. Step 4: Simplify right side
    737,715.60x = 465,551,356,008.24
  5. Step 5: Solve for x
    x = 465,551,356,008.24/737,715.60
  6. Step 6: Final answer
    x = 631,071.59

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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.