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Finding the Fourth Proportional to 46,808.47, 70,212.70 and 15,643.72

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Solution

The fourth proportional to 46,808.47, 70,212.70 and 15,643.72 is: 23,465.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,808.47 : 70,212.70 = 15,643.72 : x
  2. Step 2: Convert to fraction form
    46,808.47/70,212.70 = 15,643.72/x
  3. Step 3: Cross multiply
    46,808.47x = 70,212.70 × 15,643.72
  4. Step 4: Simplify right side
    46,808.47x = 1,098,387,819.24
  5. Step 5: Solve for x
    x = 1,098,387,819.24/46,808.47
  6. Step 6: Final answer
    x = 23,465.58

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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.