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Finding the Fourth Proportional to 56,975.65, 85,398.31 and 35,638.06

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Solution

The fourth proportional to 56,975.65, 85,398.31 and 35,638.06 is: 53,416.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,975.65 : 85,398.31 = 35,638.06 : x
  2. Step 2: Convert to fraction form
    56,975.65/85,398.31 = 35,638.06/x
  3. Step 3: Cross multiply
    56,975.65x = 85,398.31 × 35,638.06
  4. Step 4: Simplify right side
    56,975.65x = 3,043,430,095.68
  5. Step 5: Solve for x
    x = 3,043,430,095.68/56,975.65
  6. Step 6: Final answer
    x = 53,416.33

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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.