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Finding the Fourth Proportional to 62,870.94, 86,725.08 and 40,514.94

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Solution

The fourth proportional to 62,870.94, 86,725.08 and 40,514.94 is: 55,886.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,870.94 : 86,725.08 = 40,514.94 : x
  2. Step 2: Convert to fraction form
    62,870.94/86,725.08 = 40,514.94/x
  3. Step 3: Cross multiply
    62,870.94x = 86,725.08 × 40,514.94
  4. Step 4: Simplify right side
    62,870.94x = 3,513,661,412.70
  5. Step 5: Solve for x
    x = 3,513,661,412.70/62,870.94
  6. Step 6: Final answer
    x = 55,886.89

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1.5x scale

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.