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Finding the Fourth Proportional to 556,421.20, 834,631.80 and 534,648.40

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Solution

The fourth proportional to 556,421.20, 834,631.80 and 534,648.40 is: 801,972.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,421.20 : 834,631.80 = 534,648.40 : x
  2. Step 2: Convert to fraction form
    556,421.20/834,631.80 = 534,648.40/x
  3. Step 3: Cross multiply
    556,421.20x = 834,631.80 × 534,648.40
  4. Step 4: Simplify right side
    556,421.20x = 446,234,556,459.12
  5. Step 5: Solve for x
    x = 446,234,556,459.12/556,421.20
  6. Step 6: Final answer
    x = 801,972.60

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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.