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Finding the Fourth Proportional to 556,811.81, 768,003.36 and 511,019.07

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Solution

The fourth proportional to 556,811.81, 768,003.36 and 511,019.07 is: 704,842.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,811.81 : 768,003.36 = 511,019.07 : x
  2. Step 2: Convert to fraction form
    556,811.81/768,003.36 = 511,019.07/x
  3. Step 3: Cross multiply
    556,811.81x = 768,003.36 × 511,019.07
  4. Step 4: Simplify right side
    556,811.81x = 392,464,360,862.22
  5. Step 5: Solve for x
    x = 392,464,360,862.22/556,811.81
  6. Step 6: Final answer
    x = 704,842.01

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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.