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Finding the Fourth Proportional to 139,706.19, 208,545.01 and 129,298.23

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Solution

The fourth proportional to 139,706.19, 208,545.01 and 129,298.23 is: 193,008.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,706.19 : 208,545.01 = 129,298.23 : x
  2. Step 2: Convert to fraction form
    139,706.19/208,545.01 = 129,298.23/x
  3. Step 3: Cross multiply
    139,706.19x = 208,545.01 × 129,298.23
  4. Step 4: Simplify right side
    139,706.19x = 26,964,500,345.09
  5. Step 5: Solve for x
    x = 26,964,500,345.09/139,706.19
  6. Step 6: Final answer
    x = 193,008.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.