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Finding the Fourth Proportional to 19,916.99, 29,875.47 and 7,437.98

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Solution

The fourth proportional to 19,916.99, 29,875.47 and 7,437.98 is: 11,156.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,916.99 : 29,875.47 = 7,437.98 : x
  2. Step 2: Convert to fraction form
    19,916.99/29,875.47 = 7,437.98/x
  3. Step 3: Cross multiply
    19,916.99x = 29,875.47 × 7,437.98
  4. Step 4: Simplify right side
    19,916.99x = 222,213,148.35
  5. Step 5: Solve for x
    x = 222,213,148.35/19,916.99
  6. Step 6: Final answer
    x = 11,156.96

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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.