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Finding the Fourth Proportional to 74,781,605.70, 112,172,408.55 and 46,746,015.30

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Solution

The fourth proportional to 74,781,605.70, 112,172,408.55 and 46,746,015.30 is: 70,119,022.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,781,605.70 : 112,172,408.55 = 46,746,015.30 : x
  2. Step 2: Convert to fraction form
    74,781,605.70/112,172,408.55 = 46,746,015.30/x
  3. Step 3: Cross multiply
    74,781,605.70x = 112,172,408.55 × 46,746,015.30
  4. Step 4: Simplify right side
    74,781,605.70x = 5,243,613,126,316,150
  5. Step 5: Solve for x
    x = 5,243,613,126,316,150/74,781,605.70
  6. Step 6: Final answer
    x = 70,119,022.95

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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.