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Finding the Fourth Proportional to 191,495.34, 287,119.62 and 91,653.12

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Solution

The fourth proportional to 191,495.34, 287,119.62 and 91,653.12 is: 137,420.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,495.34 : 287,119.62 = 91,653.12 : x
  2. Step 2: Convert to fraction form
    191,495.34/287,119.62 = 91,653.12/x
  3. Step 3: Cross multiply
    191,495.34x = 287,119.62 × 91,653.12
  4. Step 4: Simplify right side
    191,495.34x = 26,315,408,986.21
  5. Step 5: Solve for x
    x = 26,315,408,986.21/191,495.34
  6. Step 6: Final answer
    x = 137,420.62

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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.