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Finding the Fourth Proportional to 541,207.40, 811,811.10 and 245,719.40

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Solution

The fourth proportional to 541,207.40, 811,811.10 and 245,719.40 is: 368,579.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,207.40 : 811,811.10 = 245,719.40 : x
  2. Step 2: Convert to fraction form
    541,207.40/811,811.10 = 245,719.40/x
  3. Step 3: Cross multiply
    541,207.40x = 811,811.10 × 245,719.40
  4. Step 4: Simplify right side
    541,207.40x = 199,477,736,405.34
  5. Step 5: Solve for x
    x = 199,477,736,405.34/541,207.40
  6. Step 6: Final answer
    x = 368,579.10

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Half scale
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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.