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Finding the Fourth Proportional to 191,491.38, 287,368.28 and 66,832.38

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Solution

The fourth proportional to 191,491.38, 287,368.28 and 66,832.38 is: 100,294.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,491.38 : 287,368.28 = 66,832.38 : x
  2. Step 2: Convert to fraction form
    191,491.38/287,368.28 = 66,832.38/x
  3. Step 3: Cross multiply
    191,491.38x = 287,368.28 × 66,832.38
  4. Step 4: Simplify right side
    191,491.38x = 19,205,506,088.91
  5. Step 5: Solve for x
    x = 19,205,506,088.91/191,491.38
  6. Step 6: Final answer
    x = 100,294.36

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.