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Finding the Fourth Proportional to 78,430.01, 108,215.93 and 44,435.52

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Solution

The fourth proportional to 78,430.01, 108,215.93 and 44,435.52 is: 61,311.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,430.01 : 108,215.93 = 44,435.52 : x
  2. Step 2: Convert to fraction form
    78,430.01/108,215.93 = 44,435.52/x
  3. Step 3: Cross multiply
    78,430.01x = 108,215.93 × 44,435.52
  4. Step 4: Simplify right side
    78,430.01x = 4,808,631,232.92
  5. Step 5: Solve for x
    x = 4,808,631,232.92/78,430.01
  6. Step 6: Final answer
    x = 61,311.12

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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.