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Finding the Fourth Proportional to 56,875.80, 78,513.76 and 36,742.48

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Solution

The fourth proportional to 56,875.80, 78,513.76 and 36,742.48 is: 50,720.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,875.80 : 78,513.76 = 36,742.48 : x
  2. Step 2: Convert to fraction form
    56,875.80/78,513.76 = 36,742.48/x
  3. Step 3: Cross multiply
    56,875.80x = 78,513.76 × 36,742.48
  4. Step 4: Simplify right side
    56,875.80x = 2,884,790,256.52
  5. Step 5: Solve for x
    x = 2,884,790,256.52/56,875.80
  6. Step 6: Final answer
    x = 50,720.87

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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.