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Finding the Fourth Proportional to 1,956,820.16, 2,700,539.54 and 1,129,928.60

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Solution

The fourth proportional to 1,956,820.16, 2,700,539.54 and 1,129,928.60 is: 1,559,375.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,956,820.16 : 2,700,539.54 = 1,129,928.60 : x
  2. Step 2: Convert to fraction form
    1,956,820.16/2,700,539.54 = 1,129,928.60/x
  3. Step 3: Cross multiply
    1,956,820.16x = 2,700,539.54 × 1,129,928.60
  4. Step 4: Simplify right side
    1,956,820.16x = 3,051,416,842,524.50
  5. Step 5: Solve for x
    x = 3,051,416,842,524.50/1,956,820.16
  6. Step 6: Final answer
    x = 1,559,375.21

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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.