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Finding the Fourth Proportional to 291,177.79, 436,785.51 and 91,506.51

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Solution

The fourth proportional to 291,177.79, 436,785.51 and 91,506.51 is: 137,265.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,177.79 : 436,785.51 = 91,506.51 : x
  2. Step 2: Convert to fraction form
    291,177.79/436,785.51 = 91,506.51/x
  3. Step 3: Cross multiply
    291,177.79x = 436,785.51 × 91,506.51
  4. Step 4: Simplify right side
    291,177.79x = 39,968,717,638.67
  5. Step 5: Solve for x
    x = 39,968,717,638.67/291,177.79
  6. Step 6: Final answer
    x = 137,265.68

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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.