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Finding the Fourth Proportional to 548,836.84, 757,426.58 and 307,117.30

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Solution

The fourth proportional to 548,836.84, 757,426.58 and 307,117.30 is: 423,839.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,836.84 : 757,426.58 = 307,117.30 : x
  2. Step 2: Convert to fraction form
    548,836.84/757,426.58 = 307,117.30/x
  3. Step 3: Cross multiply
    548,836.84x = 757,426.58 × 307,117.30
  4. Step 4: Simplify right side
    548,836.84x = 232,618,806,197.83
  5. Step 5: Solve for x
    x = 232,618,806,197.83/548,836.84
  6. Step 6: Final answer
    x = 423,839.64

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.