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Finding the Fourth Proportional to 47,987.70, 67,095.30 and 47,987.70

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Solution

The fourth proportional to 47,987.70, 67,095.30 and 47,987.70 is: 67,095.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,987.70 : 67,095.30 = 47,987.70 : x
  2. Step 2: Convert to fraction form
    47,987.70/67,095.30 = 47,987.70/x
  3. Step 3: Cross multiply
    47,987.70x = 67,095.30 × 47,987.70
  4. Step 4: Simplify right side
    47,987.70x = 3,219,749,127.81
  5. Step 5: Solve for x
    x = 3,219,749,127.81/47,987.70
  6. Step 6: Final answer
    x = 67,095.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.