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Finding the Fourth Proportional to 12,699.08, 19,045.53 and 5,303.58

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Solution

The fourth proportional to 12,699.08, 19,045.53 and 5,303.58 is: 7,954.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,699.08 : 19,045.53 = 5,303.58 : x
  2. Step 2: Convert to fraction form
    12,699.08/19,045.53 = 5,303.58/x
  3. Step 3: Cross multiply
    12,699.08x = 19,045.53 × 5,303.58
  4. Step 4: Simplify right side
    12,699.08x = 101,009,420.58
  5. Step 5: Solve for x
    x = 101,009,420.58/12,699.08
  6. Step 6: Final answer
    x = 7,954.07

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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.