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Finding the Fourth Proportional to 586,205.40, 879,308.10 and 551,213.40

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Solution

The fourth proportional to 586,205.40, 879,308.10 and 551,213.40 is: 826,820.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,205.40 : 879,308.10 = 551,213.40 : x
  2. Step 2: Convert to fraction form
    586,205.40/879,308.10 = 551,213.40/x
  3. Step 3: Cross multiply
    586,205.40x = 879,308.10 × 551,213.40
  4. Step 4: Simplify right side
    586,205.40x = 484,686,407,448.54
  5. Step 5: Solve for x
    x = 484,686,407,448.54/586,205.40
  6. Step 6: Final answer
    x = 826,820.10

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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.