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Finding the Fourth Proportional to 9,130,856.65, 12,600,978.25 and 5,056,475.65

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Solution

The fourth proportional to 9,130,856.65, 12,600,978.25 and 5,056,475.65 is: 6,978,155.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,130,856.65 : 12,600,978.25 = 5,056,475.65 : x
  2. Step 2: Convert to fraction form
    9,130,856.65/12,600,978.25 = 5,056,475.65/x
  3. Step 3: Cross multiply
    9,130,856.65x = 12,600,978.25 × 5,056,475.65
  4. Step 4: Simplify right side
    9,130,856.65x = 63,716,539,687,304.62
  5. Step 5: Solve for x
    x = 63,716,539,687,304.62/9,130,856.65
  6. Step 6: Final answer
    x = 6,978,155.73

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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.