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Finding the Fourth Proportional to 556,817.76, 768,011.55 and 511,025.01

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Solution

The fourth proportional to 556,817.76, 768,011.55 and 511,025.01 is: 704,850.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,817.76 : 768,011.55 = 511,025.01 : x
  2. Step 2: Convert to fraction form
    556,817.76/768,011.55 = 511,025.01/x
  3. Step 3: Cross multiply
    556,817.76x = 768,011.55 × 511,025.01
  4. Step 4: Simplify right side
    556,817.76x = 392,473,110,018.87
  5. Step 5: Solve for x
    x = 392,473,110,018.87/556,817.76
  6. Step 6: Final answer
    x = 704,850.20

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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.