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Finding the Fourth Proportional to 191,100.47, 286,654.75 and 69,516.90

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Solution

The fourth proportional to 191,100.47, 286,654.75 and 69,516.90 is: 104,276.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,100.47 : 286,654.75 = 69,516.90 : x
  2. Step 2: Convert to fraction form
    191,100.47/286,654.75 = 69,516.90/x
  3. Step 3: Cross multiply
    191,100.47x = 286,654.75 × 69,516.90
  4. Step 4: Simplify right side
    191,100.47x = 19,927,349,416.48
  5. Step 5: Solve for x
    x = 19,927,349,416.48/191,100.47
  6. Step 6: Final answer
    x = 104,276.82

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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.