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Finding the Fourth Proportional to 14,114.64, 19,478.16 and 7,827.60

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Solution

The fourth proportional to 14,114.64, 19,478.16 and 7,827.60 is: 10,802.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,114.64 : 19,478.16 = 7,827.60 : x
  2. Step 2: Convert to fraction form
    14,114.64/19,478.16 = 7,827.60/x
  3. Step 3: Cross multiply
    14,114.64x = 19,478.16 × 7,827.60
  4. Step 4: Simplify right side
    14,114.64x = 152,467,245.22
  5. Step 5: Solve for x
    x = 152,467,245.22/14,114.64
  6. Step 6: Final answer
    x = 10,802.06

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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.