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Finding the Fourth Proportional to 93,182.61, 128,446.79 and 78,048.57

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Solution

The fourth proportional to 93,182.61, 128,446.79 and 78,048.57 is: 107,585.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,182.61 : 128,446.79 = 78,048.57 : x
  2. Step 2: Convert to fraction form
    93,182.61/128,446.79 = 78,048.57/x
  3. Step 3: Cross multiply
    93,182.61x = 128,446.79 × 78,048.57
  4. Step 4: Simplify right side
    93,182.61x = 10,025,087,890.35
  5. Step 5: Solve for x
    x = 10,025,087,890.35/93,182.61
  6. Step 6: Final answer
    x = 107,585.39

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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.