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Finding the Fourth Proportional to 61,798,895.40, 92,697,882.30 and 18,668,015.40

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Solution

The fourth proportional to 61,798,895.40, 92,697,882.30 and 18,668,015.40 is: 28,001,883.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,798,895.40 : 92,697,882.30 = 18,668,015.40 : x
  2. Step 2: Convert to fraction form
    61,798,895.40/92,697,882.30 = 18,668,015.40/x
  3. Step 3: Cross multiply
    61,798,895.40x = 92,697,882.30 × 18,668,015.40
  4. Step 4: Simplify right side
    61,798,895.40x = 1,730,485,494,323,787.25
  5. Step 5: Solve for x
    x = 1,730,485,494,323,787.25/61,798,895.40
  6. Step 6: Final answer
    x = 28,001,883.90

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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.