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Finding the Fourth Proportional to 14,070.76, 19,416.80 and 7,696.15

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Solution

The fourth proportional to 14,070.76, 19,416.80 and 7,696.15 is: 10,620.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,070.76 : 19,416.80 = 7,696.15 : x
  2. Step 2: Convert to fraction form
    14,070.76/19,416.80 = 7,696.15/x
  3. Step 3: Cross multiply
    14,070.76x = 19,416.80 × 7,696.15
  4. Step 4: Simplify right side
    14,070.76x = 149,434,566.84
  5. Step 5: Solve for x
    x = 149,434,566.84/14,070.76
  6. Step 6: Final answer
    x = 10,620.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.