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Finding the Fourth Proportional to 353,237.04, 529,535.04 and 128,438.64

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Solution

The fourth proportional to 353,237.04, 529,535.04 and 128,438.64 is: 192,541.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,237.04 : 529,535.04 = 128,438.64 : x
  2. Step 2: Convert to fraction form
    353,237.04/529,535.04 = 128,438.64/x
  3. Step 3: Cross multiply
    353,237.04x = 529,535.04 × 128,438.64
  4. Step 4: Simplify right side
    353,237.04x = 68,012,760,369.95
  5. Step 5: Solve for x
    x = 68,012,760,369.95/353,237.04
  6. Step 6: Final answer
    x = 192,541.42

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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.