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Finding the Fourth Proportional to 57,637.76, 79,605.70 and 38,742.08

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Solution

The fourth proportional to 57,637.76, 79,605.70 and 38,742.08 is: 53,508.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,637.76 : 79,605.70 = 38,742.08 : x
  2. Step 2: Convert to fraction form
    57,637.76/79,605.70 = 38,742.08/x
  3. Step 3: Cross multiply
    57,637.76x = 79,605.70 × 38,742.08
  4. Step 4: Simplify right side
    57,637.76x = 3,084,090,397.86
  5. Step 5: Solve for x
    x = 3,084,090,397.86/57,637.76
  6. Step 6: Final answer
    x = 53,508.16

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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.