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Finding the Fourth Proportional to 12,904.80, 19,575.93 and 12,904.80

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Solution

The fourth proportional to 12,904.80, 19,575.93 and 12,904.80 is: 19,575.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,904.80 : 19,575.93 = 12,904.80 : x
  2. Step 2: Convert to fraction form
    12,904.80/19,575.93 = 12,904.80/x
  3. Step 3: Cross multiply
    12,904.80x = 19,575.93 × 12,904.80
  4. Step 4: Simplify right side
    12,904.80x = 252,623,461.46
  5. Step 5: Solve for x
    x = 252,623,461.46/12,904.80
  6. Step 6: Final answer
    x = 19,575.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.