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Finding the Fourth Proportional to 316,362.69, 436,580.54 and 173,122.74

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Solution

The fourth proportional to 316,362.69, 436,580.54 and 173,122.74 is: 238,909.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,362.69 : 436,580.54 = 173,122.74 : x
  2. Step 2: Convert to fraction form
    316,362.69/436,580.54 = 173,122.74/x
  3. Step 3: Cross multiply
    316,362.69x = 436,580.54 × 173,122.74
  4. Step 4: Simplify right side
    316,362.69x = 75,582,019,315.48
  5. Step 5: Solve for x
    x = 75,582,019,315.48/316,362.69
  6. Step 6: Final answer
    x = 238,909.40

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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.