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Finding the Fourth Proportional to 40,803,978.80, 61,205,968.20 and 15,241,666.70

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Solution

The fourth proportional to 40,803,978.80, 61,205,968.20 and 15,241,666.70 is: 22,862,500.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,803,978.80 : 61,205,968.20 = 15,241,666.70 : x
  2. Step 2: Convert to fraction form
    40,803,978.80/61,205,968.20 = 15,241,666.70/x
  3. Step 3: Cross multiply
    40,803,978.80x = 61,205,968.20 × 15,241,666.70
  4. Step 4: Simplify right side
    40,803,978.80x = 932,880,967,355,199
  5. Step 5: Solve for x
    x = 932,880,967,355,199/40,803,978.80
  6. Step 6: Final answer
    x = 22,862,500.05

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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.