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Finding the Fourth Proportional to 92,895.50, 128,248.91 and 61,156.67

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Solution

The fourth proportional to 92,895.50, 128,248.91 and 61,156.67 is: 84,431.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,895.50 : 128,248.91 = 61,156.67 : x
  2. Step 2: Convert to fraction form
    92,895.50/128,248.91 = 61,156.67/x
  3. Step 3: Cross multiply
    92,895.50x = 128,248.91 × 61,156.67
  4. Step 4: Simplify right side
    92,895.50x = 7,843,275,319.70
  5. Step 5: Solve for x
    x = 7,843,275,319.70/92,895.50
  6. Step 6: Final answer
    x = 84,431.17

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1.5x scale

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.