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Finding the Fourth Proportional to 109,713.51, 151,403.76 and 59,412.51

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Solution

The fourth proportional to 109,713.51, 151,403.76 and 59,412.51 is: 81,988.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,713.51 : 151,403.76 = 59,412.51 : x
  2. Step 2: Convert to fraction form
    109,713.51/151,403.76 = 59,412.51/x
  3. Step 3: Cross multiply
    109,713.51x = 151,403.76 × 59,412.51
  4. Step 4: Simplify right side
    109,713.51x = 8,995,277,405.04
  5. Step 5: Solve for x
    x = 8,995,277,405.04/109,713.51
  6. Step 6: Final answer
    x = 81,988.79

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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.