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Finding the Fourth Proportional to 521,809.19, 719,778.40 and 344,999.00

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Solution

The fourth proportional to 521,809.19, 719,778.40 and 344,999.00 is: 475,888.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,809.19 : 719,778.40 = 344,999.00 : x
  2. Step 2: Convert to fraction form
    521,809.19/719,778.40 = 344,999.00/x
  3. Step 3: Cross multiply
    521,809.19x = 719,778.40 × 344,999.00
  4. Step 4: Simplify right side
    521,809.19x = 248,322,827,050.41
  5. Step 5: Solve for x
    x = 248,322,827,050.41/521,809.19
  6. Step 6: Final answer
    x = 475,888.18

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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.