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Finding the Fourth Proportional to 75,117.42, 112,639.68 and 37,661.40

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Solution

The fourth proportional to 75,117.42, 112,639.68 and 37,661.40 is: 56,473.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,117.42 : 112,639.68 = 37,661.40 : x
  2. Step 2: Convert to fraction form
    75,117.42/112,639.68 = 37,661.40/x
  3. Step 3: Cross multiply
    75,117.42x = 112,639.68 × 37,661.40
  4. Step 4: Simplify right side
    75,117.42x = 4,242,168,044.35
  5. Step 5: Solve for x
    x = 4,242,168,044.35/75,117.42
  6. Step 6: Final answer
    x = 56,473.83

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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.