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Finding the Fourth Proportional to 98,920.53, 136,507.37 and 56,470.77

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Solution

The fourth proportional to 98,920.53, 136,507.37 and 56,470.77 is: 77,927.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,920.53 : 136,507.37 = 56,470.77 : x
  2. Step 2: Convert to fraction form
    98,920.53/136,507.37 = 56,470.77/x
  3. Step 3: Cross multiply
    98,920.53x = 136,507.37 × 56,470.77
  4. Step 4: Simplify right side
    98,920.53x = 7,708,676,012.22
  5. Step 5: Solve for x
    x = 7,708,676,012.22/98,920.53
  6. Step 6: Final answer
    x = 77,927.97

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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.