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Finding the Fourth Proportional to 472,855.80, 708,117.30 and 314,225.40

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Solution

The fourth proportional to 472,855.80, 708,117.30 and 314,225.40 is: 470,563.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,855.80 : 708,117.30 = 314,225.40 : x
  2. Step 2: Convert to fraction form
    472,855.80/708,117.30 = 314,225.40/x
  3. Step 3: Cross multiply
    472,855.80x = 708,117.30 × 314,225.40
  4. Step 4: Simplify right side
    472,855.80x = 222,508,441,839.42
  5. Step 5: Solve for x
    x = 222,508,441,839.42/472,855.80
  6. Step 6: Final answer
    x = 470,563.00

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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.