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Finding the Fourth Proportional to 6,652,364.70, 9,978,547.05 and 4,260,880.20

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Solution

The fourth proportional to 6,652,364.70, 9,978,547.05 and 4,260,880.20 is: 6,391,320.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,652,364.70 : 9,978,547.05 = 4,260,880.20 : x
  2. Step 2: Convert to fraction form
    6,652,364.70/9,978,547.05 = 4,260,880.20/x
  3. Step 3: Cross multiply
    6,652,364.70x = 9,978,547.05 × 4,260,880.20
  4. Step 4: Simplify right side
    6,652,364.70x = 42,517,393,550,113.41
  5. Step 5: Solve for x
    x = 42,517,393,550,113.41/6,652,364.70
  6. Step 6: Final answer
    x = 6,391,320.30

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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.