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Finding the Fourth Proportional to 7,140.76, 10,710.54 and 2,460.76

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Solution

The fourth proportional to 7,140.76, 10,710.54 and 2,460.76 is: 3,690.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.76 : 10,710.54 = 2,460.76 : x
  2. Step 2: Convert to fraction form
    7,140.76/10,710.54 = 2,460.76/x
  3. Step 3: Cross multiply
    7,140.76x = 10,710.54 × 2,460.76
  4. Step 4: Simplify right side
    7,140.76x = 26,356,068.41
  5. Step 5: Solve for x
    x = 26,356,068.41/7,140.76
  6. Step 6: Final answer
    x = 3,690.93

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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.