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Finding the Fourth Proportional to 19,695.53, 29,473.95 and 12,303.47

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Solution

The fourth proportional to 19,695.53, 29,473.95 and 12,303.47 is: 18,411.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,695.53 : 29,473.95 = 12,303.47 : x
  2. Step 2: Convert to fraction form
    19,695.53/29,473.95 = 12,303.47/x
  3. Step 3: Cross multiply
    19,695.53x = 29,473.95 × 12,303.47
  4. Step 4: Simplify right side
    19,695.53x = 362,631,859.61
  5. Step 5: Solve for x
    x = 362,631,859.61/19,695.53
  6. Step 6: Final answer
    x = 18,411.89

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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.