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Finding the Fourth Proportional to 292,643.42, 438,919.34 and 92,937.51

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Solution

The fourth proportional to 292,643.42, 438,919.34 and 92,937.51 is: 139,391.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,643.42 : 438,919.34 = 92,937.51 : x
  2. Step 2: Convert to fraction form
    292,643.42/438,919.34 = 92,937.51/x
  3. Step 3: Cross multiply
    292,643.42x = 438,919.34 × 92,937.51
  4. Step 4: Simplify right side
    292,643.42x = 40,792,070,085.76
  5. Step 5: Solve for x
    x = 40,792,070,085.76/292,643.42
  6. Step 6: Final answer
    x = 139,391.72

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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.