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Finding the Fourth Proportional to 15,460.16, 21,483.02 and 15,299.60

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Solution

The fourth proportional to 15,460.16, 21,483.02 and 15,299.60 is: 21,259.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,460.16 : 21,483.02 = 15,299.60 : x
  2. Step 2: Convert to fraction form
    15,460.16/21,483.02 = 15,299.60/x
  3. Step 3: Cross multiply
    15,460.16x = 21,483.02 × 15,299.60
  4. Step 4: Simplify right side
    15,460.16x = 328,681,612.79
  5. Step 5: Solve for x
    x = 328,681,612.79/15,460.16
  6. Step 6: Final answer
    x = 21,259.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.