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Finding the Fourth Proportional to 187,210.56, 280,703.56 and 85,881.59

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Solution

The fourth proportional to 187,210.56, 280,703.56 and 85,881.59 is: 128,770.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,210.56 : 280,703.56 = 85,881.59 : x
  2. Step 2: Convert to fraction form
    187,210.56/280,703.56 = 85,881.59/x
  3. Step 3: Cross multiply
    187,210.56x = 280,703.56 × 85,881.59
  4. Step 4: Simplify right side
    187,210.56x = 24,107,268,051.46
  5. Step 5: Solve for x
    x = 24,107,268,051.46/187,210.56
  6. Step 6: Final answer
    x = 128,770.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.