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Finding the Fourth Proportional to 9,886.60, 14,829.90 and 4,342.60

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Solution

The fourth proportional to 9,886.60, 14,829.90 and 4,342.60 is: 6,513.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,886.60 : 14,829.90 = 4,342.60 : x
  2. Step 2: Convert to fraction form
    9,886.60/14,829.90 = 4,342.60/x
  3. Step 3: Cross multiply
    9,886.60x = 14,829.90 × 4,342.60
  4. Step 4: Simplify right side
    9,886.60x = 64,400,323.74
  5. Step 5: Solve for x
    x = 64,400,323.74/9,886.60
  6. Step 6: Final answer
    x = 6,513.90

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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.