Home / 77,209.86-106,555.14-56,885.13

Finding the Fourth Proportional to 77,209.86, 106,555.14 and 56,885.13

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Solution

The fourth proportional to 77,209.86, 106,555.14 and 56,885.13 is: 78,505.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,209.86 : 106,555.14 = 56,885.13 : x
  2. Step 2: Convert to fraction form
    77,209.86/106,555.14 = 56,885.13/x
  3. Step 3: Cross multiply
    77,209.86x = 106,555.14 × 56,885.13
  4. Step 4: Simplify right side
    77,209.86x = 6,061,402,991.07
  5. Step 5: Solve for x
    x = 6,061,402,991.07/77,209.86
  6. Step 6: Final answer
    x = 78,505.56

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Half scale
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Double scale
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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.