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Finding the Fourth Proportional to 546,401.80, 819,602.70 and 457,828.30

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Solution

The fourth proportional to 546,401.80, 819,602.70 and 457,828.30 is: 686,742.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    546,401.80 : 819,602.70 = 457,828.30 : x
  2. Step 2: Convert to fraction form
    546,401.80/819,602.70 = 457,828.30/x
  3. Step 3: Cross multiply
    546,401.80x = 819,602.70 × 457,828.30
  4. Step 4: Simplify right side
    546,401.80x = 375,237,310,816.41
  5. Step 5: Solve for x
    x = 375,237,310,816.41/546,401.80
  6. Step 6: Final answer
    x = 686,742.45

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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.