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Finding the Fourth Proportional to 207,295.12, 310,988.04 and 67,051.72

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Solution

The fourth proportional to 207,295.12, 310,988.04 and 67,051.72 is: 100,592.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,295.12 : 310,988.04 = 67,051.72 : x
  2. Step 2: Convert to fraction form
    207,295.12/310,988.04 = 67,051.72/x
  3. Step 3: Cross multiply
    207,295.12x = 310,988.04 × 67,051.72
  4. Step 4: Simplify right side
    207,295.12x = 20,852,282,981.43
  5. Step 5: Solve for x
    x = 20,852,282,981.43/207,295.12
  6. Step 6: Final answer
    x = 100,592.25

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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.