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Finding the Fourth Proportional to 553,661.80, 830,492.70 and 483,677.80

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Solution

The fourth proportional to 553,661.80, 830,492.70 and 483,677.80 is: 725,516.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,661.80 : 830,492.70 = 483,677.80 : x
  2. Step 2: Convert to fraction form
    553,661.80/830,492.70 = 483,677.80/x
  3. Step 3: Cross multiply
    553,661.80x = 830,492.70 × 483,677.80
  4. Step 4: Simplify right side
    553,661.80x = 401,690,882,052.06
  5. Step 5: Solve for x
    x = 401,690,882,052.06/553,661.80
  6. Step 6: Final answer
    x = 725,516.70

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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.