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Finding the Fourth Proportional to 72,875.80, 109,066.80 and 44,813.63

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Solution

The fourth proportional to 72,875.80, 109,066.80 and 44,813.63 is: 67,068.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,875.80 : 109,066.80 = 44,813.63 : x
  2. Step 2: Convert to fraction form
    72,875.80/109,066.80 = 44,813.63/x
  3. Step 3: Cross multiply
    72,875.80x = 109,066.80 × 44,813.63
  4. Step 4: Simplify right side
    72,875.80x = 4,887,678,916.10
  5. Step 5: Solve for x
    x = 4,887,678,916.10/72,875.80
  6. Step 6: Final answer
    x = 67,068.61

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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.