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Finding the Fourth Proportional to 124,653.42, 172,021.71 and 68,064.84

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Solution

The fourth proportional to 124,653.42, 172,021.71 and 68,064.84 is: 93,929.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,653.42 : 172,021.71 = 68,064.84 : x
  2. Step 2: Convert to fraction form
    124,653.42/172,021.71 = 68,064.84/x
  3. Step 3: Cross multiply
    124,653.42x = 172,021.71 × 68,064.84
  4. Step 4: Simplify right side
    124,653.42x = 11,708,630,167.68
  5. Step 5: Solve for x
    x = 11,708,630,167.68/124,653.42
  6. Step 6: Final answer
    x = 93,929.47

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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.