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Finding the Fourth Proportional to 45,594.40, 68,434.80 and 28,098.40

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Solution

The fourth proportional to 45,594.40, 68,434.80 and 28,098.40 is: 42,174.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,594.40 : 68,434.80 = 28,098.40 : x
  2. Step 2: Convert to fraction form
    45,594.40/68,434.80 = 28,098.40/x
  3. Step 3: Cross multiply
    45,594.40x = 68,434.80 × 28,098.40
  4. Step 4: Simplify right side
    45,594.40x = 1,922,908,384.32
  5. Step 5: Solve for x
    x = 1,922,908,384.32/45,594.40
  6. Step 6: Final answer
    x = 42,174.22

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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.