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Finding the Fourth Proportional to 201,798.63, 278,482.17 and 116,964.90

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Solution

The fourth proportional to 201,798.63, 278,482.17 and 116,964.90 is: 161,411.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,798.63 : 278,482.17 = 116,964.90 : x
  2. Step 2: Convert to fraction form
    201,798.63/278,482.17 = 116,964.90/x
  3. Step 3: Cross multiply
    201,798.63x = 278,482.17 × 116,964.90
  4. Step 4: Simplify right side
    201,798.63x = 32,572,639,165.83
  5. Step 5: Solve for x
    x = 32,572,639,165.83/201,798.63
  6. Step 6: Final answer
    x = 161,411.60

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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.