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Finding the Fourth Proportional to 97,007.90, 145,511.85 and 65,903.90

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Solution

The fourth proportional to 97,007.90, 145,511.85 and 65,903.90 is: 98,855.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,007.90 : 145,511.85 = 65,903.90 : x
  2. Step 2: Convert to fraction form
    97,007.90/145,511.85 = 65,903.90/x
  3. Step 3: Cross multiply
    97,007.90x = 145,511.85 × 65,903.90
  4. Step 4: Simplify right side
    97,007.90x = 9,589,798,411.22
  5. Step 5: Solve for x
    x = 9,589,798,411.22/97,007.90
  6. Step 6: Final answer
    x = 98,855.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.