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Finding the Fourth Proportional to 191,090.61, 286,603.92 and 57,939.03

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Solution

The fourth proportional to 191,090.61, 286,603.92 and 57,939.03 is: 86,898.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,090.61 : 286,603.92 = 57,939.03 : x
  2. Step 2: Convert to fraction form
    191,090.61/286,603.92 = 57,939.03/x
  3. Step 3: Cross multiply
    191,090.61x = 286,603.92 × 57,939.03
  4. Step 4: Simplify right side
    191,090.61x = 16,605,553,119.00
  5. Step 5: Solve for x
    x = 16,605,553,119.00/191,090.61
  6. Step 6: Final answer
    x = 86,898.84

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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.