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Finding the Fourth Proportional to 46,861.90, 70,292.88 and 19,159.90

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Solution

The fourth proportional to 46,861.90, 70,292.88 and 19,159.90 is: 28,739.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,861.90 : 70,292.88 = 19,159.90 : x
  2. Step 2: Convert to fraction form
    46,861.90/70,292.88 = 19,159.90/x
  3. Step 3: Cross multiply
    46,861.90x = 70,292.88 × 19,159.90
  4. Step 4: Simplify right side
    46,861.90x = 1,346,804,551.51
  5. Step 5: Solve for x
    x = 1,346,804,551.51/46,861.90
  6. Step 6: Final answer
    x = 28,739.86

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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.