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Finding the Fourth Proportional to 659,320.60, 989,142.90 and 185,999.80

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Solution

The fourth proportional to 659,320.60, 989,142.90 and 185,999.80 is: 279,045.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,320.60 : 989,142.90 = 185,999.80 : x
  2. Step 2: Convert to fraction form
    659,320.60/989,142.90 = 185,999.80/x
  3. Step 3: Cross multiply
    659,320.60x = 989,142.90 × 185,999.80
  4. Step 4: Simplify right side
    659,320.60x = 183,980,381,571.42
  5. Step 5: Solve for x
    x = 183,980,381,571.42/659,320.60
  6. Step 6: Final answer
    x = 279,045.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.