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Finding the Fourth Proportional to 76,613.07, 105,726.03 and 43,079.07

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Solution

The fourth proportional to 76,613.07, 105,726.03 and 43,079.07 is: 59,449.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,613.07 : 105,726.03 = 43,079.07 : x
  2. Step 2: Convert to fraction form
    76,613.07/105,726.03 = 43,079.07/x
  3. Step 3: Cross multiply
    76,613.07x = 105,726.03 × 43,079.07
  4. Step 4: Simplify right side
    76,613.07x = 4,554,579,047.19
  5. Step 5: Solve for x
    x = 4,554,579,047.19/76,613.07
  6. Step 6: Final answer
    x = 59,449.11

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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.