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Finding the Fourth Proportional to 1,849,209.60, 2,772,064.80 and 1,091,632.80

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Solution

The fourth proportional to 1,849,209.60, 2,772,064.80 and 1,091,632.80 is: 1,636,416.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,849,209.60 : 2,772,064.80 = 1,091,632.80 : x
  2. Step 2: Convert to fraction form
    1,849,209.60/2,772,064.80 = 1,091,632.80/x
  3. Step 3: Cross multiply
    1,849,209.60x = 2,772,064.80 × 1,091,632.80
  4. Step 4: Simplify right side
    1,849,209.60x = 3,026,076,859,405.44
  5. Step 5: Solve for x
    x = 3,026,076,859,405.44/1,849,209.60
  6. Step 6: Final answer
    x = 1,636,416.37

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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.