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Finding the Fourth Proportional to 103,354.76, 142,608.12 and 67,597.32

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Solution

The fourth proportional to 103,354.76, 142,608.12 and 67,597.32 is: 93,270.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,354.76 : 142,608.12 = 67,597.32 : x
  2. Step 2: Convert to fraction form
    103,354.76/142,608.12 = 67,597.32/x
  3. Step 3: Cross multiply
    103,354.76x = 142,608.12 × 67,597.32
  4. Step 4: Simplify right side
    103,354.76x = 9,639,926,722.24
  5. Step 5: Solve for x
    x = 9,639,926,722.24/103,354.76
  6. Step 6: Final answer
    x = 93,270.27

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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.