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Finding the Fourth Proportional to 57,878,145.90, 79,868,908.11 and 34,357,687.98

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Solution

The fourth proportional to 57,878,145.90, 79,868,908.11 and 34,357,687.98 is: 47,411,868.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,878,145.90 : 79,868,908.11 = 34,357,687.98 : x
  2. Step 2: Convert to fraction form
    57,878,145.90/79,868,908.11 = 34,357,687.98/x
  3. Step 3: Cross multiply
    57,878,145.90x = 79,868,908.11 × 34,357,687.98
  4. Step 4: Simplify right side
    57,878,145.90x = 2,744,111,024,146,671
  5. Step 5: Solve for x
    x = 2,744,111,024,146,671/57,878,145.90
  6. Step 6: Final answer
    x = 47,411,868.18

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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.