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Finding the Fourth Proportional to 6,531,858.60, 9,785,978.10 and 5,587,074.60

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Solution

The fourth proportional to 6,531,858.60, 9,785,978.10 and 5,587,074.60 is: 8,370,510.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,531,858.60 : 9,785,978.10 = 5,587,074.60 : x
  2. Step 2: Convert to fraction form
    6,531,858.60/9,785,978.10 = 5,587,074.60/x
  3. Step 3: Cross multiply
    6,531,858.60x = 9,785,978.10 × 5,587,074.60
  4. Step 4: Simplify right side
    6,531,858.60x = 54,674,989,678,666.26
  5. Step 5: Solve for x
    x = 54,674,989,678,666.26/6,531,858.60
  6. Step 6: Final answer
    x = 8,370,510.30

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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.