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Finding the Fourth Proportional to 613,117.40, 919,676.10 and 463,818.20

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Solution

The fourth proportional to 613,117.40, 919,676.10 and 463,818.20 is: 695,727.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,117.40 : 919,676.10 = 463,818.20 : x
  2. Step 2: Convert to fraction form
    613,117.40/919,676.10 = 463,818.20/x
  3. Step 3: Cross multiply
    613,117.40x = 919,676.10 × 463,818.20
  4. Step 4: Simplify right side
    613,117.40x = 426,562,513,285.02
  5. Step 5: Solve for x
    x = 426,562,513,285.02/613,117.40
  6. Step 6: Final answer
    x = 695,727.30

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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.