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Finding the Fourth Proportional to 181,809.60, 272,617.20 and 76,509.60

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Solution

The fourth proportional to 181,809.60, 272,617.20 and 76,509.60 is: 114,723.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,809.60 : 272,617.20 = 76,509.60 : x
  2. Step 2: Convert to fraction form
    181,809.60/272,617.20 = 76,509.60/x
  3. Step 3: Cross multiply
    181,809.60x = 272,617.20 × 76,509.60
  4. Step 4: Simplify right side
    181,809.60x = 20,857,832,925.12
  5. Step 5: Solve for x
    x = 20,857,832,925.12/181,809.60
  6. Step 6: Final answer
    x = 114,723.50

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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.