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Finding the Fourth Proportional to 61,897.46, 85,420.53 and 35,039.40

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Solution

The fourth proportional to 61,897.46, 85,420.53 and 35,039.40 is: 48,355.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,897.46 : 85,420.53 = 35,039.40 : x
  2. Step 2: Convert to fraction form
    61,897.46/85,420.53 = 35,039.40/x
  3. Step 3: Cross multiply
    61,897.46x = 85,420.53 × 35,039.40
  4. Step 4: Simplify right side
    61,897.46x = 2,993,084,118.88
  5. Step 5: Solve for x
    x = 2,993,084,118.88/61,897.46
  6. Step 6: Final answer
    x = 48,355.53

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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.