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Finding the Fourth Proportional to 605,445.40, 911,246.29 and 456,437.80

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Solution

The fourth proportional to 605,445.40, 911,246.29 and 456,437.80 is: 686,977.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,445.40 : 911,246.29 = 456,437.80 : x
  2. Step 2: Convert to fraction form
    605,445.40/911,246.29 = 456,437.80/x
  3. Step 3: Cross multiply
    605,445.40x = 911,246.29 × 456,437.80
  4. Step 4: Simplify right side
    605,445.40x = 415,927,251,865.76
  5. Step 5: Solve for x
    x = 415,927,251,865.76/605,445.40
  6. Step 6: Final answer
    x = 686,977.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.