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Finding the Fourth Proportional to 48,987.61, 73,074.74 and 47,347.71

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Solution

The fourth proportional to 48,987.61, 73,074.74 and 47,347.71 is: 70,628.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,987.61 : 73,074.74 = 47,347.71 : x
  2. Step 2: Convert to fraction form
    48,987.61/73,074.74 = 47,347.71/x
  3. Step 3: Cross multiply
    48,987.61x = 73,074.74 × 47,347.71
  4. Step 4: Simplify right side
    48,987.61x = 3,459,921,264.63
  5. Step 5: Solve for x
    x = 3,459,921,264.63/48,987.61
  6. Step 6: Final answer
    x = 70,628.50

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.