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Finding the Fourth Proportional to 70,625.61, 105,910.65 and 25,636.32

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Solution

The fourth proportional to 70,625.61, 105,910.65 and 25,636.32 is: 38,444.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,625.61 : 105,910.65 = 25,636.32 : x
  2. Step 2: Convert to fraction form
    70,625.61/105,910.65 = 25,636.32/x
  3. Step 3: Cross multiply
    70,625.61x = 105,910.65 × 25,636.32
  4. Step 4: Simplify right side
    70,625.61x = 2,715,159,314.81
  5. Step 5: Solve for x
    x = 2,715,159,314.81/70,625.61
  6. Step 6: Final answer
    x = 38,444.40

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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.