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Finding the Fourth Proportional to 624,129.70, 936,194.55 and 617,908.90

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Solution

The fourth proportional to 624,129.70, 936,194.55 and 617,908.90 is: 926,863.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,129.70 : 936,194.55 = 617,908.90 : x
  2. Step 2: Convert to fraction form
    624,129.70/936,194.55 = 617,908.90/x
  3. Step 3: Cross multiply
    624,129.70x = 936,194.55 × 617,908.90
  4. Step 4: Simplify right side
    624,129.70x = 578,482,944,576.50
  5. Step 5: Solve for x
    x = 578,482,944,576.50/624,129.70
  6. Step 6: Final answer
    x = 926,863.35

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Half scale
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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.