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Finding the Fourth Proportional to 281,787, 388,905.84 and 174,391.64

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Solution

The fourth proportional to 281,787, 388,905.84 and 174,391.64 is: 240,685.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,787 : 388,905.84 = 174,391.64 : x
  2. Step 2: Convert to fraction form
    281,787/388,905.84 = 174,391.64/x
  3. Step 3: Cross multiply
    281,787x = 388,905.84 × 174,391.64
  4. Step 4: Simplify right side
    281,787x = 67,821,927,243.18
  5. Step 5: Solve for x
    x = 67,821,927,243.18/281,787
  6. Step 6: Final answer
    x = 240,685.08

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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.