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Finding the Fourth Proportional to 358,521, 537,781.50 and 109,203

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Solution

The fourth proportional to 358,521, 537,781.50 and 109,203 is: 163,804.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,521 : 537,781.50 = 109,203 : x
  2. Step 2: Convert to fraction form
    358,521/537,781.50 = 109,203/x
  3. Step 3: Cross multiply
    358,521x = 537,781.50 × 109,203
  4. Step 4: Simplify right side
    358,521x = 58,727,353,144.50
  5. Step 5: Solve for x
    x = 58,727,353,144.50/358,521
  6. Step 6: Final answer
    x = 163,804.50

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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.