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Finding the Fourth Proportional to 316,364.24, 436,568.64 and 173,130.32

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Solution

The fourth proportional to 316,364.24, 436,568.64 and 173,130.32 is: 238,912.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,364.24 : 436,568.64 = 173,130.32 : x
  2. Step 2: Convert to fraction form
    316,364.24/436,568.64 = 173,130.32/x
  3. Step 3: Cross multiply
    316,364.24x = 436,568.64 × 173,130.32
  4. Step 4: Simplify right side
    316,364.24x = 75,583,266,162.32
  5. Step 5: Solve for x
    x = 75,583,266,162.32/316,364.24
  6. Step 6: Final answer
    x = 238,912.17

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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.