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Finding the Fourth Proportional to 805,807.80, 1,112,043.99 and 443,259.69

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Solution

The fourth proportional to 805,807.80, 1,112,043.99 and 443,259.69 is: 611,714.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,807.80 : 1,112,043.99 = 443,259.69 : x
  2. Step 2: Convert to fraction form
    805,807.80/1,112,043.99 = 443,259.69/x
  3. Step 3: Cross multiply
    805,807.80x = 1,112,043.99 × 443,259.69
  4. Step 4: Simplify right side
    805,807.80x = 492,924,274,273.76
  5. Step 5: Solve for x
    x = 492,924,274,273.76/805,807.80
  6. Step 6: Final answer
    x = 611,714.45

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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.