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Finding the Fourth Proportional to 92,713.80, 127,795.68 and 72,538.32

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Solution

The fourth proportional to 92,713.80, 127,795.68 and 72,538.32 is: 99,986.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,713.80 : 127,795.68 = 72,538.32 : x
  2. Step 2: Convert to fraction form
    92,713.80/127,795.68 = 72,538.32/x
  3. Step 3: Cross multiply
    92,713.80x = 127,795.68 × 72,538.32
  4. Step 4: Simplify right side
    92,713.80x = 9,270,083,930.46
  5. Step 5: Solve for x
    x = 9,270,083,930.46/92,713.80
  6. Step 6: Final answer
    x = 99,986.02

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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.