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Finding the Fourth Proportional to 617,784.40, 926,676.60 and 576,312.40

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Solution

The fourth proportional to 617,784.40, 926,676.60 and 576,312.40 is: 864,468.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,784.40 : 926,676.60 = 576,312.40 : x
  2. Step 2: Convert to fraction form
    617,784.40/926,676.60 = 576,312.40/x
  3. Step 3: Cross multiply
    617,784.40x = 926,676.60 × 576,312.40
  4. Step 4: Simplify right side
    617,784.40x = 534,055,215,369.84
  5. Step 5: Solve for x
    x = 534,055,215,369.84/617,784.40
  6. Step 6: Final answer
    x = 864,468.60

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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.