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Finding the Fourth Proportional to 29,319.55, 43,978.95 and 7,132.93

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Solution

The fourth proportional to 29,319.55, 43,978.95 and 7,132.93 is: 10,699.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,319.55 : 43,978.95 = 7,132.93 : x
  2. Step 2: Convert to fraction form
    29,319.55/43,978.95 = 7,132.93/x
  3. Step 3: Cross multiply
    29,319.55x = 43,978.95 × 7,132.93
  4. Step 4: Simplify right side
    29,319.55x = 313,698,661.88
  5. Step 5: Solve for x
    x = 313,698,661.88/29,319.55
  6. Step 6: Final answer
    x = 10,699.30

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1.5x scale

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.