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Finding the Fourth Proportional to 73,911,422.80, 101,998,423.74 and 40,873,895.50

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Solution

The fourth proportional to 73,911,422.80, 101,998,423.74 and 40,873,895.50 is: 56,406,340.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,911,422.80 : 101,998,423.74 = 40,873,895.50 : x
  2. Step 2: Convert to fraction form
    73,911,422.80/101,998,423.74 = 40,873,895.50/x
  3. Step 3: Cross multiply
    73,911,422.80x = 101,998,423.74 × 40,873,895.50
  4. Step 4: Simplify right side
    73,911,422.80x = 4,169,072,913,113,479
  5. Step 5: Solve for x
    x = 4,169,072,913,113,479/73,911,422.80
  6. Step 6: Final answer
    x = 56,406,340.93

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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.