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Finding the Fourth Proportional to 661,644.24, 992,477.70 and 188,341.80

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Solution

The fourth proportional to 661,644.24, 992,477.70 and 188,341.80 is: 282,515.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,644.24 : 992,477.70 = 188,341.80 : x
  2. Step 2: Convert to fraction form
    661,644.24/992,477.70 = 188,341.80/x
  3. Step 3: Cross multiply
    661,644.24x = 992,477.70 × 188,341.80
  4. Step 4: Simplify right side
    661,644.24x = 186,925,036,477.86
  5. Step 5: Solve for x
    x = 186,925,036,477.86/661,644.24
  6. Step 6: Final answer
    x = 282,515.93

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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.