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Finding the Fourth Proportional to 66,344.76, 91,490.58 and 56,300.76

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Solution

The fourth proportional to 66,344.76, 91,490.58 and 56,300.76 is: 77,639.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,344.76 : 91,490.58 = 56,300.76 : x
  2. Step 2: Convert to fraction form
    66,344.76/91,490.58 = 56,300.76/x
  3. Step 3: Cross multiply
    66,344.76x = 91,490.58 × 56,300.76
  4. Step 4: Simplify right side
    66,344.76x = 5,150,989,186.84
  5. Step 5: Solve for x
    x = 5,150,989,186.84/66,344.76
  6. Step 6: Final answer
    x = 77,639.73

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Half scale
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Double scale
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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.