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Finding the Fourth Proportional to 186,880.64, 280,172.16 and 107,905.28

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Solution

The fourth proportional to 186,880.64, 280,172.16 and 107,905.28 is: 161,772.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,880.64 : 280,172.16 = 107,905.28 : x
  2. Step 2: Convert to fraction form
    186,880.64/280,172.16 = 107,905.28/x
  3. Step 3: Cross multiply
    186,880.64x = 280,172.16 × 107,905.28
  4. Step 4: Simplify right side
    186,880.64x = 30,232,055,373.00
  5. Step 5: Solve for x
    x = 30,232,055,373.00/186,880.64
  6. Step 6: Final answer
    x = 161,772.00

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1.5x scale

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.