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Finding the Fourth Proportional to 581,654.40, 815,145.60 and 581,654.40

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Solution

The fourth proportional to 581,654.40, 815,145.60 and 581,654.40 is: 815,145.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,654.40 : 815,145.60 = 581,654.40 : x
  2. Step 2: Convert to fraction form
    581,654.40/815,145.60 = 581,654.40/x
  3. Step 3: Cross multiply
    581,654.40x = 815,145.60 × 581,654.40
  4. Step 4: Simplify right side
    581,654.40x = 474,133,024,880.64
  5. Step 5: Solve for x
    x = 474,133,024,880.64/581,654.40
  6. Step 6: Final answer
    x = 815,145.60

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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.