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Finding the Fourth Proportional to 235,718.55, 353,581.16 and 67,238.91

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Solution

The fourth proportional to 235,718.55, 353,581.16 and 67,238.91 is: 100,859.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,718.55 : 353,581.16 = 67,238.91 : x
  2. Step 2: Convert to fraction form
    235,718.55/353,581.16 = 67,238.91/x
  3. Step 3: Cross multiply
    235,718.55x = 353,581.16 × 67,238.91
  4. Step 4: Simplify right side
    235,718.55x = 23,774,411,458.74
  5. Step 5: Solve for x
    x = 23,774,411,458.74/235,718.55
  6. Step 6: Final answer
    x = 100,859.31

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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.