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Finding the Fourth Proportional to 9,143,458.40, 12,784,045.60 and 9,143,458.40

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Solution

The fourth proportional to 9,143,458.40, 12,784,045.60 and 9,143,458.40 is: 12,784,045.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,143,458.40 : 12,784,045.60 = 9,143,458.40 : x
  2. Step 2: Convert to fraction form
    9,143,458.40/12,784,045.60 = 9,143,458.40/x
  3. Step 3: Cross multiply
    9,143,458.40x = 12,784,045.60 × 9,143,458.40
  4. Step 4: Simplify right side
    9,143,458.40x = 116,890,389,127,303.05
  5. Step 5: Solve for x
    x = 116,890,389,127,303.05/9,143,458.40
  6. Step 6: Final answer
    x = 12,784,045.60

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.