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Finding the Fourth Proportional to 581,659.40, 816,189.40 and 581,659.40

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Solution

The fourth proportional to 581,659.40, 816,189.40 and 581,659.40 is: 816,189.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,659.40 : 816,189.40 = 581,659.40 : x
  2. Step 2: Convert to fraction form
    581,659.40/816,189.40 = 581,659.40/x
  3. Step 3: Cross multiply
    581,659.40x = 816,189.40 × 581,659.40
  4. Step 4: Simplify right side
    581,659.40x = 474,744,236,690.36
  5. Step 5: Solve for x
    x = 474,744,236,690.36/581,659.40
  6. Step 6: Final answer
    x = 816,189.40

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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.