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Finding the Fourth Proportional to 191,561.78, 264,352.01 and 105,528.80

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Solution

The fourth proportional to 191,561.78, 264,352.01 and 105,528.80 is: 145,627.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,561.78 : 264,352.01 = 105,528.80 : x
  2. Step 2: Convert to fraction form
    191,561.78/264,352.01 = 105,528.80/x
  3. Step 3: Cross multiply
    191,561.78x = 264,352.01 × 105,528.80
  4. Step 4: Simplify right side
    191,561.78x = 27,896,748,543.48
  5. Step 5: Solve for x
    x = 27,896,748,543.48/191,561.78
  6. Step 6: Final answer
    x = 145,627.95

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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.