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Finding the Fourth Proportional to 71,598.90, 107,513.10 and 56,929.80

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Solution

The fourth proportional to 71,598.90, 107,513.10 and 56,929.80 is: 85,485.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,598.90 : 107,513.10 = 56,929.80 : x
  2. Step 2: Convert to fraction form
    71,598.90/107,513.10 = 56,929.80/x
  3. Step 3: Cross multiply
    71,598.90x = 107,513.10 × 56,929.80
  4. Step 4: Simplify right side
    71,598.90x = 6,120,699,280.38
  5. Step 5: Solve for x
    x = 6,120,699,280.38/71,598.90
  6. Step 6: Final answer
    x = 85,485.94

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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.