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Finding the Fourth Proportional to 29,473,139.42, 40,671,978.56 and 16,916,260.90

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Solution

The fourth proportional to 29,473,139.42, 40,671,978.56 and 16,916,260.90 is: 23,343,892.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,473,139.42 : 40,671,978.56 = 16,916,260.90 : x
  2. Step 2: Convert to fraction form
    29,473,139.42/40,671,978.56 = 16,916,260.90/x
  3. Step 3: Cross multiply
    29,473,139.42x = 40,671,978.56 × 16,916,260.90
  4. Step 4: Simplify right side
    29,473,139.42x = 688,017,800,640,166.25
  5. Step 5: Solve for x
    x = 688,017,800,640,166.25/29,473,139.42
  6. Step 6: Final answer
    x = 23,343,892.58

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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.