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Finding the Fourth Proportional to 152,670.99, 210,711.21 and 84,709.83

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Solution

The fourth proportional to 152,670.99, 210,711.21 and 84,709.83 is: 116,913.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,670.99 : 210,711.21 = 84,709.83 : x
  2. Step 2: Convert to fraction form
    152,670.99/210,711.21 = 84,709.83/x
  3. Step 3: Cross multiply
    152,670.99x = 210,711.21 × 84,709.83
  4. Step 4: Simplify right side
    152,670.99x = 17,849,310,778.19
  5. Step 5: Solve for x
    x = 17,849,310,778.19/152,670.99
  6. Step 6: Final answer
    x = 116,913.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.