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Finding the Fourth Proportional to 191,174.60, 286,747.50 and 77,329.64

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Solution

The fourth proportional to 191,174.60, 286,747.50 and 77,329.64 is: 115,988.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,174.60 : 286,747.50 = 77,329.64 : x
  2. Step 2: Convert to fraction form
    191,174.60/286,747.50 = 77,329.64/x
  3. Step 3: Cross multiply
    191,174.60x = 286,747.50 × 77,329.64
  4. Step 4: Simplify right side
    191,174.60x = 22,174,080,945.90
  5. Step 5: Solve for x
    x = 22,174,080,945.90/191,174.60
  6. Step 6: Final answer
    x = 115,988.64

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1.5x scale

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.