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Finding the Fourth Proportional to 63,750.87, 87,994.71 and 42,530.07

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Solution

The fourth proportional to 63,750.87, 87,994.71 and 42,530.07 is: 58,703.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,750.87 : 87,994.71 = 42,530.07 : x
  2. Step 2: Convert to fraction form
    63,750.87/87,994.71 = 42,530.07/x
  3. Step 3: Cross multiply
    63,750.87x = 87,994.71 × 42,530.07
  4. Step 4: Simplify right side
    63,750.87x = 3,742,421,175.93
  5. Step 5: Solve for x
    x = 3,742,421,175.93/63,750.87
  6. Step 6: Final answer
    x = 58,703.84

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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.