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Finding the Fourth Proportional to 83,798.04, 115,528.10 and 56,893.84

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Solution

The fourth proportional to 83,798.04, 115,528.10 and 56,893.84 is: 78,436.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,798.04 : 115,528.10 = 56,893.84 : x
  2. Step 2: Convert to fraction form
    83,798.04/115,528.10 = 56,893.84/x
  3. Step 3: Cross multiply
    83,798.04x = 115,528.10 × 56,893.84
  4. Step 4: Simplify right side
    83,798.04x = 6,572,837,102.43
  5. Step 5: Solve for x
    x = 6,572,837,102.43/83,798.04
  6. Step 6: Final answer
    x = 78,436.65

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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.