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Finding the Fourth Proportional to 125,220.27, 187,904.12 and 46,389.45

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Solution

The fourth proportional to 125,220.27, 187,904.12 and 46,389.45 is: 69,611.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,220.27 : 187,904.12 = 46,389.45 : x
  2. Step 2: Convert to fraction form
    125,220.27/187,904.12 = 46,389.45/x
  3. Step 3: Cross multiply
    125,220.27x = 187,904.12 × 46,389.45
  4. Step 4: Simplify right side
    125,220.27x = 8,716,768,547.59
  5. Step 5: Solve for x
    x = 8,716,768,547.59/125,220.27
  6. Step 6: Final answer
    x = 69,611.48

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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.