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Finding the Fourth Proportional to 6,912,602.40, 10,368,903.60 and 6,492,698.40

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Solution

The fourth proportional to 6,912,602.40, 10,368,903.60 and 6,492,698.40 is: 9,739,047.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,912,602.40 : 10,368,903.60 = 6,492,698.40 : x
  2. Step 2: Convert to fraction form
    6,912,602.40/10,368,903.60 = 6,492,698.40/x
  3. Step 3: Cross multiply
    6,912,602.40x = 10,368,903.60 × 6,492,698.40
  4. Step 4: Simplify right side
    6,912,602.40x = 67,322,163,813,474.24
  5. Step 5: Solve for x
    x = 67,322,163,813,474.24/6,912,602.40
  6. Step 6: Final answer
    x = 9,739,047.60

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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.