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Finding the Fourth Proportional to 92,857.59, 128,142.21 and 52,570.32

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Solution

The fourth proportional to 92,857.59, 128,142.21 and 52,570.32 is: 72,546.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,857.59 : 128,142.21 = 52,570.32 : x
  2. Step 2: Convert to fraction form
    92,857.59/128,142.21 = 52,570.32/x
  3. Step 3: Cross multiply
    92,857.59x = 128,142.21 × 52,570.32
  4. Step 4: Simplify right side
    92,857.59x = 6,736,476,985.21
  5. Step 5: Solve for x
    x = 6,736,476,985.21/92,857.59
  6. Step 6: Final answer
    x = 72,546.33

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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.