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Finding the Fourth Proportional to 70,506.72, 105,552.30 and 61,758.72

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Solution

The fourth proportional to 70,506.72, 105,552.30 and 61,758.72 is: 92,456.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,506.72 : 105,552.30 = 61,758.72 : x
  2. Step 2: Convert to fraction form
    70,506.72/105,552.30 = 61,758.72/x
  3. Step 3: Cross multiply
    70,506.72x = 105,552.30 × 61,758.72
  4. Step 4: Simplify right side
    70,506.72x = 6,518,774,941.06
  5. Step 5: Solve for x
    x = 6,518,774,941.06/70,506.72
  6. Step 6: Final answer
    x = 92,456.08

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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.