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Finding the Fourth Proportional to 76,246.76, 105,220.56 and 46,438.76

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Solution

The fourth proportional to 76,246.76, 105,220.56 and 46,438.76 is: 64,085.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,246.76 : 105,220.56 = 46,438.76 : x
  2. Step 2: Convert to fraction form
    76,246.76/105,220.56 = 46,438.76/x
  3. Step 3: Cross multiply
    76,246.76x = 105,220.56 × 46,438.76
  4. Step 4: Simplify right side
    76,246.76x = 4,886,312,332.91
  5. Step 5: Solve for x
    x = 4,886,312,332.91/76,246.76
  6. Step 6: Final answer
    x = 64,085.51

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Half scale
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Double scale
Find fourth proportional to 76,247.76, 105,221.94 and 46,439.76
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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.