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Finding the Fourth Proportional to 19,655.70, 27,123.95 and 10,703.17

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Solution

The fourth proportional to 19,655.70, 27,123.95 and 10,703.17 is: 14,769.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,655.70 : 27,123.95 = 10,703.17 : x
  2. Step 2: Convert to fraction form
    19,655.70/27,123.95 = 10,703.17/x
  3. Step 3: Cross multiply
    19,655.70x = 27,123.95 × 10,703.17
  4. Step 4: Simplify right side
    19,655.70x = 290,312,194.41
  5. Step 5: Solve for x
    x = 290,312,194.41/19,655.70
  6. Step 6: Final answer
    x = 14,769.87

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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.