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Finding the Fourth Proportional to 30,463.60, 42,043.60 and 17,035.60

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Solution

The fourth proportional to 30,463.60, 42,043.60 and 17,035.60 is: 23,511.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,463.60 : 42,043.60 = 17,035.60 : x
  2. Step 2: Convert to fraction form
    30,463.60/42,043.60 = 17,035.60/x
  3. Step 3: Cross multiply
    30,463.60x = 42,043.60 × 17,035.60
  4. Step 4: Simplify right side
    30,463.60x = 716,237,952.16
  5. Step 5: Solve for x
    x = 716,237,952.16/30,463.60
  6. Step 6: Final answer
    x = 23,511.27

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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.