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Finding the Fourth Proportional to 436,009.80, 654,014.70 and 376,912.20

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Solution

The fourth proportional to 436,009.80, 654,014.70 and 376,912.20 is: 565,368.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,009.80 : 654,014.70 = 376,912.20 : x
  2. Step 2: Convert to fraction form
    436,009.80/654,014.70 = 376,912.20/x
  3. Step 3: Cross multiply
    436,009.80x = 654,014.70 × 376,912.20
  4. Step 4: Simplify right side
    436,009.80x = 246,506,119,409.34
  5. Step 5: Solve for x
    x = 246,506,119,409.34/436,009.80
  6. Step 6: Final answer
    x = 565,368.30

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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.