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Finding the Fourth Proportional to 859,506,626.40, 1,289,259,939.60 and 859,506,626.40

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Solution

The fourth proportional to 859,506,626.40, 1,289,259,939.60 and 859,506,626.40 is: 1,289,259,939.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,506,626.40 : 1,289,259,939.60 = 859,506,626.40 : x
  2. Step 2: Convert to fraction form
    859,506,626.40/1,289,259,939.60 = 859,506,626.40/x
  3. Step 3: Cross multiply
    859,506,626.40x = 1,289,259,939.60 × 859,506,626.40
  4. Step 4: Simplify right side
    859,506,626.40x = 1,108,127,461,238,263,680
  5. Step 5: Solve for x
    x = 1,108,127,461,238,263,680/859,506,626.40
  6. Step 6: Final answer
    x = 1,289,259,939.60

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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.