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Finding the Fourth Proportional to 245,711.80, 368,579.85 and 127,613.80

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Solution

The fourth proportional to 245,711.80, 368,579.85 and 127,613.80 is: 191,427.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,711.80 : 368,579.85 = 127,613.80 : x
  2. Step 2: Convert to fraction form
    245,711.80/368,579.85 = 127,613.80/x
  3. Step 3: Cross multiply
    245,711.80x = 368,579.85 × 127,613.80
  4. Step 4: Simplify right side
    245,711.80x = 47,035,875,261.93
  5. Step 5: Solve for x
    x = 47,035,875,261.93/245,711.80
  6. Step 6: Final answer
    x = 191,427.01

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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.