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Finding the Fourth Proportional to 99,573.40, 149,359.80 and 82,006.12

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Solution

The fourth proportional to 99,573.40, 149,359.80 and 82,006.12 is: 123,008.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,573.40 : 149,359.80 = 82,006.12 : x
  2. Step 2: Convert to fraction form
    99,573.40/149,359.80 = 82,006.12/x
  3. Step 3: Cross multiply
    99,573.40x = 149,359.80 × 82,006.12
  4. Step 4: Simplify right side
    99,573.40x = 12,248,417,681.98
  5. Step 5: Solve for x
    x = 12,248,417,681.98/99,573.40
  6. Step 6: Final answer
    x = 123,008.93

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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.