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Finding the Fourth Proportional to 207,700.84, 286,438.98 and 136,054.72

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Solution

The fourth proportional to 207,700.84, 286,438.98 and 136,054.72 is: 187,632.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,700.84 : 286,438.98 = 136,054.72 : x
  2. Step 2: Convert to fraction form
    207,700.84/286,438.98 = 136,054.72/x
  3. Step 3: Cross multiply
    207,700.84x = 286,438.98 × 136,054.72
  4. Step 4: Simplify right side
    207,700.84x = 38,971,375,220.99
  5. Step 5: Solve for x
    x = 38,971,375,220.99/207,700.84
  6. Step 6: Final answer
    x = 187,632.25

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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.