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Finding the Fourth Proportional to 391,783.59, 540,199.89 and 362,730.92

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Solution

The fourth proportional to 391,783.59, 540,199.89 and 362,730.92 is: 500,141.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,783.59 : 540,199.89 = 362,730.92 : x
  2. Step 2: Convert to fraction form
    391,783.59/540,199.89 = 362,730.92/x
  3. Step 3: Cross multiply
    391,783.59x = 540,199.89 × 362,730.92
  4. Step 4: Simplify right side
    391,783.59x = 195,947,200,382.60
  5. Step 5: Solve for x
    x = 195,947,200,382.60/391,783.59
  6. Step 6: Final answer
    x = 500,141.42

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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.