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Finding the Fourth Proportional to 541,287.40, 811,931.10 and 245,799.40

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Solution

The fourth proportional to 541,287.40, 811,931.10 and 245,799.40 is: 368,699.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,287.40 : 811,931.10 = 245,799.40 : x
  2. Step 2: Convert to fraction form
    541,287.40/811,931.10 = 245,799.40/x
  3. Step 3: Cross multiply
    541,287.40x = 811,931.10 × 245,799.40
  4. Step 4: Simplify right side
    541,287.40x = 199,572,177,221.34
  5. Step 5: Solve for x
    x = 199,572,177,221.34/541,287.40
  6. Step 6: Final answer
    x = 368,699.10

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Half scale
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Double scale
Find fourth proportional to 541,288.40, 811,932.60 and 245,800.40
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.