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Finding the Fourth Proportional to 191,579.61, 264,379.80 and 111,053.88

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Solution

The fourth proportional to 191,579.61, 264,379.80 and 111,053.88 is: 153,254.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,579.61 : 264,379.80 = 111,053.88 : x
  2. Step 2: Convert to fraction form
    191,579.61/264,379.80 = 111,053.88/x
  3. Step 3: Cross multiply
    191,579.61x = 264,379.80 × 111,053.88
  4. Step 4: Simplify right side
    191,579.61x = 29,360,402,583.62
  5. Step 5: Solve for x
    x = 29,360,402,583.62/191,579.61
  6. Step 6: Final answer
    x = 153,254.32

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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.