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Finding the Fourth Proportional to 612,503.40, 845,253.36 and 340,562.64

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Solution

The fourth proportional to 612,503.40, 845,253.36 and 340,562.64 is: 469,975.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,503.40 : 845,253.36 = 340,562.64 : x
  2. Step 2: Convert to fraction form
    612,503.40/845,253.36 = 340,562.64/x
  3. Step 3: Cross multiply
    612,503.40x = 845,253.36 × 340,562.64
  4. Step 4: Simplify right side
    612,503.40x = 287,861,715,750.47
  5. Step 5: Solve for x
    x = 287,861,715,750.47/612,503.40
  6. Step 6: Final answer
    x = 469,975.70

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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.