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Finding the Fourth Proportional to 191,619.64, 287,473.95 and 65,260.98

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Solution

The fourth proportional to 191,619.64, 287,473.95 and 65,260.98 is: 97,906.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,619.64 : 287,473.95 = 65,260.98 : x
  2. Step 2: Convert to fraction form
    191,619.64/287,473.95 = 65,260.98/x
  3. Step 3: Cross multiply
    191,619.64x = 287,473.95 × 65,260.98
  4. Step 4: Simplify right side
    191,619.64x = 18,760,830,807.24
  5. Step 5: Solve for x
    x = 18,760,830,807.24/191,619.64
  6. Step 6: Final answer
    x = 97,906.62

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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.