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Finding the Fourth Proportional to 19,606.62, 29,409.93 and 7,124.32

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Solution

The fourth proportional to 19,606.62, 29,409.93 and 7,124.32 is: 10,686.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,606.62 : 29,409.93 = 7,124.32 : x
  2. Step 2: Convert to fraction form
    19,606.62/29,409.93 = 7,124.32/x
  3. Step 3: Cross multiply
    19,606.62x = 29,409.93 × 7,124.32
  4. Step 4: Simplify right side
    19,606.62x = 209,525,752.50
  5. Step 5: Solve for x
    x = 209,525,752.50/19,606.62
  6. Step 6: Final answer
    x = 10,686.48

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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.