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Finding the Fourth Proportional to 252,613.94, 348,582.42 and 139,429.40

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Solution

The fourth proportional to 252,613.94, 348,582.42 and 139,429.40 is: 192,398.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,613.94 : 348,582.42 = 139,429.40 : x
  2. Step 2: Convert to fraction form
    252,613.94/348,582.42 = 139,429.40/x
  3. Step 3: Cross multiply
    252,613.94x = 348,582.42 × 139,429.40
  4. Step 4: Simplify right side
    252,613.94x = 48,602,635,928.24
  5. Step 5: Solve for x
    x = 48,602,635,928.24/252,613.94
  6. Step 6: Final answer
    x = 192,398.87

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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.