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Finding the Fourth Proportional to 70,627.16, 105,985.38 and 39,482.84

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Solution

The fourth proportional to 70,627.16, 105,985.38 and 39,482.84 is: 59,249.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,627.16 : 105,985.38 = 39,482.84 : x
  2. Step 2: Convert to fraction form
    70,627.16/105,985.38 = 39,482.84/x
  3. Step 3: Cross multiply
    70,627.16x = 105,985.38 × 39,482.84
  4. Step 4: Simplify right side
    70,627.16x = 4,184,603,800.88
  5. Step 5: Solve for x
    x = 4,184,603,800.88/70,627.16
  6. Step 6: Final answer
    x = 59,249.22

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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.