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Finding the Fourth Proportional to 659,328.60, 988,895.70 and 186,061.80

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Solution

The fourth proportional to 659,328.60, 988,895.70 and 186,061.80 is: 279,065.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,328.60 : 988,895.70 = 186,061.80 : x
  2. Step 2: Convert to fraction form
    659,328.60/988,895.70 = 186,061.80/x
  3. Step 3: Cross multiply
    659,328.60x = 988,895.70 × 186,061.80
  4. Step 4: Simplify right side
    659,328.60x = 183,995,713,954.26
  5. Step 5: Solve for x
    x = 183,995,713,954.26/659,328.60
  6. Step 6: Final answer
    x = 279,065.27

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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.