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Finding the Fourth Proportional to 70,617,692.80, 105,926,539.20 and 41,952,246.40

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Solution

The fourth proportional to 70,617,692.80, 105,926,539.20 and 41,952,246.40 is: 62,928,369.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,617,692.80 : 105,926,539.20 = 41,952,246.40 : x
  2. Step 2: Convert to fraction form
    70,617,692.80/105,926,539.20 = 41,952,246.40/x
  3. Step 3: Cross multiply
    70,617,692.80x = 105,926,539.20 × 41,952,246.40
  4. Step 4: Simplify right side
    70,617,692.80x = 4,443,856,272,817,659
  5. Step 5: Solve for x
    x = 4,443,856,272,817,659/70,617,692.80
  6. Step 6: Final answer
    x = 62,928,369.60

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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.