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Finding the Fourth Proportional to 96,937.68, 133,719.36 and 56,642.88

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Solution

The fourth proportional to 96,937.68, 133,719.36 and 56,642.88 is: 78,135.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,937.68 : 133,719.36 = 56,642.88 : x
  2. Step 2: Convert to fraction form
    96,937.68/133,719.36 = 56,642.88/x
  3. Step 3: Cross multiply
    96,937.68x = 133,719.36 × 56,642.88
  4. Step 4: Simplify right side
    96,937.68x = 7,574,249,662.16
  5. Step 5: Solve for x
    x = 7,574,249,662.16/96,937.68
  6. Step 6: Final answer
    x = 78,135.25

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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.