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Finding the Fourth Proportional to 517,720.21, 776,664.47 and 153,018.83

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Solution

The fourth proportional to 517,720.21, 776,664.47 and 153,018.83 is: 229,553.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,720.21 : 776,664.47 = 153,018.83 : x
  2. Step 2: Convert to fraction form
    517,720.21/776,664.47 = 153,018.83/x
  3. Step 3: Cross multiply
    517,720.21x = 776,664.47 × 153,018.83
  4. Step 4: Simplify right side
    517,720.21x = 118,844,290,826.18
  5. Step 5: Solve for x
    x = 118,844,290,826.18/517,720.21
  6. Step 6: Final answer
    x = 229,553.12

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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.