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Finding the Fourth Proportional to 662,841.36, 914,430.06 and 447,903

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Solution

The fourth proportional to 662,841.36, 914,430.06 and 447,903 is: 617,909.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,841.36 : 914,430.06 = 447,903 : x
  2. Step 2: Convert to fraction form
    662,841.36/914,430.06 = 447,903/x
  3. Step 3: Cross multiply
    662,841.36x = 914,430.06 × 447,903
  4. Step 4: Simplify right side
    662,841.36x = 409,575,967,164.18
  5. Step 5: Solve for x
    x = 409,575,967,164.18/662,841.36
  6. Step 6: Final answer
    x = 617,909.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.