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Finding the Fourth Proportional to 69,305.96, 103,457.60 and 60,898.40

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Solution

The fourth proportional to 69,305.96, 103,457.60 and 60,898.40 is: 90,907.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,305.96 : 103,457.60 = 60,898.40 : x
  2. Step 2: Convert to fraction form
    69,305.96/103,457.60 = 60,898.40/x
  3. Step 3: Cross multiply
    69,305.96x = 103,457.60 × 60,898.40
  4. Step 4: Simplify right side
    69,305.96x = 6,300,402,307.84
  5. Step 5: Solve for x
    x = 6,300,402,307.84/69,305.96
  6. Step 6: Final answer
    x = 90,907.08

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.