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Finding the Fourth Proportional to 387,595.86, 581,477.62 and 117,701.82

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Solution

The fourth proportional to 387,595.86, 581,477.62 and 117,701.82 is: 176,578.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,595.86 : 581,477.62 = 117,701.82 : x
  2. Step 2: Convert to fraction form
    387,595.86/581,477.62 = 117,701.82/x
  3. Step 3: Cross multiply
    387,595.86x = 581,477.62 × 117,701.82
  4. Step 4: Simplify right side
    387,595.86x = 68,440,974,163.27
  5. Step 5: Solve for x
    x = 68,440,974,163.27/387,595.86
  6. Step 6: Final answer
    x = 176,578.19

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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.