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Finding the Fourth Proportional to 97,776.50, 134,931.57 and 53,064.50

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Solution

The fourth proportional to 97,776.50, 134,931.57 and 53,064.50 is: 73,229.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,776.50 : 134,931.57 = 53,064.50 : x
  2. Step 2: Convert to fraction form
    97,776.50/134,931.57 = 53,064.50/x
  3. Step 3: Cross multiply
    97,776.50x = 134,931.57 × 53,064.50
  4. Step 4: Simplify right side
    97,776.50x = 7,160,076,296.27
  5. Step 5: Solve for x
    x = 7,160,076,296.27/97,776.50
  6. Step 6: Final answer
    x = 73,229.01

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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.