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Finding the Fourth Proportional to 70,408,977.40, 105,613,466.10 and 60,331,281.40

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Solution

The fourth proportional to 70,408,977.40, 105,613,466.10 and 60,331,281.40 is: 90,496,922.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,408,977.40 : 105,613,466.10 = 60,331,281.40 : x
  2. Step 2: Convert to fraction form
    70,408,977.40/105,613,466.10 = 60,331,281.40/x
  3. Step 3: Cross multiply
    70,408,977.40x = 105,613,466.10 × 60,331,281.40
  4. Step 4: Simplify right side
    70,408,977.40x = 6,371,795,742,908,460
  5. Step 5: Solve for x
    x = 6,371,795,742,908,460/70,408,977.40
  6. Step 6: Final answer
    x = 90,496,922.10

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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.