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Finding the Fourth Proportional to 90,497.99, 124,898.66 and 59,479.45

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Solution

The fourth proportional to 90,497.99, 124,898.66 and 59,479.45 is: 82,089.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,497.99 : 124,898.66 = 59,479.45 : x
  2. Step 2: Convert to fraction form
    90,497.99/124,898.66 = 59,479.45/x
  3. Step 3: Cross multiply
    90,497.99x = 124,898.66 × 59,479.45
  4. Step 4: Simplify right side
    90,497.99x = 7,428,903,215.94
  5. Step 5: Solve for x
    x = 7,428,903,215.94/90,497.99
  6. Step 6: Final answer
    x = 82,089.15

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1.5x scale

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.