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Finding the Fourth Proportional to 14,603.40, 21,868.65 and 9,646.20

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Solution

The fourth proportional to 14,603.40, 21,868.65 and 9,646.20 is: 14,445.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,603.40 : 21,868.65 = 9,646.20 : x
  2. Step 2: Convert to fraction form
    14,603.40/21,868.65 = 9,646.20/x
  3. Step 3: Cross multiply
    14,603.40x = 21,868.65 × 9,646.20
  4. Step 4: Simplify right side
    14,603.40x = 210,949,371.63
  5. Step 5: Solve for x
    x = 210,949,371.63/14,603.40
  6. Step 6: Final answer
    x = 14,445.22

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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.