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Finding the Fourth Proportional to 645,107.70, 967,661.55 and 530,946.30

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Solution

The fourth proportional to 645,107.70, 967,661.55 and 530,946.30 is: 796,419.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,107.70 : 967,661.55 = 530,946.30 : x
  2. Step 2: Convert to fraction form
    645,107.70/967,661.55 = 530,946.30/x
  3. Step 3: Cross multiply
    645,107.70x = 967,661.55 × 530,946.30
  4. Step 4: Simplify right side
    645,107.70x = 513,776,319,624.77
  5. Step 5: Solve for x
    x = 513,776,319,624.77/645,107.70
  6. Step 6: Final answer
    x = 796,419.45

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Half scale
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Double scale
Find fourth proportional to 645,108.70, 967,663.05 and 530,947.30
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.