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Finding the Fourth Proportional to 191,889.40, 264,807.66 and 105,846.48

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Solution

The fourth proportional to 191,889.40, 264,807.66 and 105,846.48 is: 146,068.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,889.40 : 264,807.66 = 105,846.48 : x
  2. Step 2: Convert to fraction form
    191,889.40/264,807.66 = 105,846.48/x
  3. Step 3: Cross multiply
    191,889.40x = 264,807.66 × 105,846.48
  4. Step 4: Simplify right side
    191,889.40x = 28,028,958,688.04
  5. Step 5: Solve for x
    x = 28,028,958,688.04/191,889.40
  6. Step 6: Final answer
    x = 146,068.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.