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Finding the Fourth Proportional to 9,876,643.80, 14,814,965.70 and 8,805,888.60

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Solution

The fourth proportional to 9,876,643.80, 14,814,965.70 and 8,805,888.60 is: 13,208,832.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,876,643.80 : 14,814,965.70 = 8,805,888.60 : x
  2. Step 2: Convert to fraction form
    9,876,643.80/14,814,965.70 = 8,805,888.60/x
  3. Step 3: Cross multiply
    9,876,643.80x = 14,814,965.70 × 8,805,888.60
  4. Step 4: Simplify right side
    9,876,643.80x = 130,458,937,567,021.02
  5. Step 5: Solve for x
    x = 130,458,937,567,021.02/9,876,643.80
  6. Step 6: Final answer
    x = 13,208,832.90

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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.