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Finding the Fourth Proportional to 19,776.79, 29,686.03 and 19,330.50

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Solution

The fourth proportional to 19,776.79, 29,686.03 and 19,330.50 is: 29,016.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,776.79 : 29,686.03 = 19,330.50 : x
  2. Step 2: Convert to fraction form
    19,776.79/29,686.03 = 19,330.50/x
  3. Step 3: Cross multiply
    19,776.79x = 29,686.03 × 19,330.50
  4. Step 4: Simplify right side
    19,776.79x = 573,845,865.91
  5. Step 5: Solve for x
    x = 573,845,865.91/19,776.79
  6. Step 6: Final answer
    x = 29,016.13

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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.