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Finding the Fourth Proportional to 70,557.90, 105,781.36 and 48,303.82

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Solution

The fourth proportional to 70,557.90, 105,781.36 and 48,303.82 is: 72,417.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,557.90 : 105,781.36 = 48,303.82 : x
  2. Step 2: Convert to fraction form
    70,557.90/105,781.36 = 48,303.82/x
  3. Step 3: Cross multiply
    70,557.90x = 105,781.36 × 48,303.82
  4. Step 4: Simplify right side
    70,557.90x = 5,109,643,772.80
  5. Step 5: Solve for x
    x = 5,109,643,772.80/70,557.90
  6. Step 6: Final answer
    x = 72,417.74

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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.