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Finding the Fourth Proportional to 5,314,851.60, 7,973,443.80 and 1,720,006.80

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Solution

The fourth proportional to 5,314,851.60, 7,973,443.80 and 1,720,006.80 is: 2,580,387.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,314,851.60 : 7,973,443.80 = 1,720,006.80 : x
  2. Step 2: Convert to fraction form
    5,314,851.60/7,973,443.80 = 1,720,006.80/x
  3. Step 3: Cross multiply
    5,314,851.60x = 7,973,443.80 × 1,720,006.80
  4. Step 4: Simplify right side
    5,314,851.60x = 13,714,377,555,417.84
  5. Step 5: Solve for x
    x = 13,714,377,555,417.84/5,314,851.60
  6. Step 6: Final answer
    x = 2,580,387.67

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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.