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Finding the Fourth Proportional to 9,130.76, 13,695.12 and 2,557.48

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Solution

The fourth proportional to 9,130.76, 13,695.12 and 2,557.48 is: 3,835.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,130.76 : 13,695.12 = 2,557.48 : x
  2. Step 2: Convert to fraction form
    9,130.76/13,695.12 = 2,557.48/x
  3. Step 3: Cross multiply
    9,130.76x = 13,695.12 × 2,557.48
  4. Step 4: Simplify right side
    9,130.76x = 35,024,995.50
  5. Step 5: Solve for x
    x = 35,024,995.50/9,130.76
  6. Step 6: Final answer
    x = 3,835.93

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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.