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Finding the Fourth Proportional to 8,924.66, 12,316.02 and 5,387.18

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Solution

The fourth proportional to 8,924.66, 12,316.02 and 5,387.18 is: 7,434.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,924.66 : 12,316.02 = 5,387.18 : x
  2. Step 2: Convert to fraction form
    8,924.66/12,316.02 = 5,387.18/x
  3. Step 3: Cross multiply
    8,924.66x = 12,316.02 × 5,387.18
  4. Step 4: Simplify right side
    8,924.66x = 66,348,616.62
  5. Step 5: Solve for x
    x = 66,348,616.62/8,924.66
  6. Step 6: Final answer
    x = 7,434.30

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Half scale
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Double scale
Find fourth proportional to 8,925.66, 12,317.40 and 5,388.18
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.