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Finding the Fourth Proportional to 289,588.89, 399,632.78 and 176,411.64

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Solution

The fourth proportional to 289,588.89, 399,632.78 and 176,411.64 is: 243,448.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,588.89 : 399,632.78 = 176,411.64 : x
  2. Step 2: Convert to fraction form
    289,588.89/399,632.78 = 176,411.64/x
  3. Step 3: Cross multiply
    289,588.89x = 399,632.78 × 176,411.64
  4. Step 4: Simplify right side
    289,588.89x = 70,499,873,235.50
  5. Step 5: Solve for x
    x = 70,499,873,235.50/289,588.89
  6. Step 6: Final answer
    x = 243,448.13

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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.