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Finding the Fourth Proportional to 70,942.74, 97,900.95 and 40,730.01

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Solution

The fourth proportional to 70,942.74, 97,900.95 and 40,730.01 is: 56,207.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,942.74 : 97,900.95 = 40,730.01 : x
  2. Step 2: Convert to fraction form
    70,942.74/97,900.95 = 40,730.01/x
  3. Step 3: Cross multiply
    70,942.74x = 97,900.95 × 40,730.01
  4. Step 4: Simplify right side
    70,942.74x = 3,987,506,672.51
  5. Step 5: Solve for x
    x = 3,987,506,672.51/70,942.74
  6. Step 6: Final answer
    x = 56,207.40

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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.