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Finding the Fourth Proportional to 235,509.57, 324,888.84 and 139,948.61

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Solution

The fourth proportional to 235,509.57, 324,888.84 and 139,948.61 is: 193,061.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,509.57 : 324,888.84 = 139,948.61 : x
  2. Step 2: Convert to fraction form
    235,509.57/324,888.84 = 139,948.61/x
  3. Step 3: Cross multiply
    235,509.57x = 324,888.84 × 139,948.61
  4. Step 4: Simplify right side
    235,509.57x = 45,467,739,938.07
  5. Step 5: Solve for x
    x = 45,467,739,938.07/235,509.57
  6. Step 6: Final answer
    x = 193,061.11

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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.