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Finding the Fourth Proportional to 623,834.80, 935,137.80 and 308,340.40

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Solution

The fourth proportional to 623,834.80, 935,137.80 and 308,340.40 is: 462,206.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,834.80 : 935,137.80 = 308,340.40 : x
  2. Step 2: Convert to fraction form
    623,834.80/935,137.80 = 308,340.40/x
  3. Step 3: Cross multiply
    623,834.80x = 935,137.80 × 308,340.40
  4. Step 4: Simplify right side
    623,834.80x = 288,340,763,307.12
  5. Step 5: Solve for x
    x = 288,340,763,307.12/623,834.80
  6. Step 6: Final answer
    x = 462,206.92

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1.5x scale

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.