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Finding the Fourth Proportional to 69,887,599.80, 104,830,415.55 and 31,549,052.40

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Solution

The fourth proportional to 69,887,599.80, 104,830,415.55 and 31,549,052.40 is: 47,323,134.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,887,599.80 : 104,830,415.55 = 31,549,052.40 : x
  2. Step 2: Convert to fraction form
    69,887,599.80/104,830,415.55 = 31,549,052.40/x
  3. Step 3: Cross multiply
    69,887,599.80x = 104,830,415.55 × 31,549,052.40
  4. Step 4: Simplify right side
    69,887,599.80x = 3,307,300,273,300,724.50
  5. Step 5: Solve for x
    x = 3,307,300,273,300,724.50/69,887,599.80
  6. Step 6: Final answer
    x = 47,323,134.33

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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.