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Finding the Fourth Proportional to 92,796.01, 128,058.77 and 56,985.64

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Solution

The fourth proportional to 92,796.01, 128,058.77 and 56,985.64 is: 78,640.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,796.01 : 128,058.77 = 56,985.64 : x
  2. Step 2: Convert to fraction form
    92,796.01/128,058.77 = 56,985.64/x
  3. Step 3: Cross multiply
    92,796.01x = 128,058.77 × 56,985.64
  4. Step 4: Simplify right side
    92,796.01x = 7,297,510,966.06
  5. Step 5: Solve for x
    x = 7,297,510,966.06/92,796.01
  6. Step 6: Final answer
    x = 78,640.35

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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.