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Finding the Fourth Proportional to 316,171.86, 436,333.14 and 187,184.40

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Solution

The fourth proportional to 316,171.86, 436,333.14 and 187,184.40 is: 258,323.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,171.86 : 436,333.14 = 187,184.40 : x
  2. Step 2: Convert to fraction form
    316,171.86/436,333.14 = 187,184.40/x
  3. Step 3: Cross multiply
    316,171.86x = 436,333.14 × 187,184.40
  4. Step 4: Simplify right side
    316,171.86x = 81,674,757,011.02
  5. Step 5: Solve for x
    x = 81,674,757,011.02/316,171.86
  6. Step 6: Final answer
    x = 258,323.93

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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.