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Finding the Fourth Proportional to 92,768.16, 128,020.10 and 52,481.07

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Solution

The fourth proportional to 92,768.16, 128,020.10 and 52,481.07 is: 72,423.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,768.16 : 128,020.10 = 52,481.07 : x
  2. Step 2: Convert to fraction form
    92,768.16/128,020.10 = 52,481.07/x
  3. Step 3: Cross multiply
    92,768.16x = 128,020.10 × 52,481.07
  4. Step 4: Simplify right side
    92,768.16x = 6,718,631,829.51
  5. Step 5: Solve for x
    x = 6,718,631,829.51/92,768.16
  6. Step 6: Final answer
    x = 72,423.90

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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.