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Finding the Fourth Proportional to 292,276.66, 438,151.71 and 105,156.50

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Solution

The fourth proportional to 292,276.66, 438,151.71 and 105,156.50 is: 157,640.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,276.66 : 438,151.71 = 105,156.50 : x
  2. Step 2: Convert to fraction form
    292,276.66/438,151.71 = 105,156.50/x
  3. Step 3: Cross multiply
    292,276.66x = 438,151.71 × 105,156.50
  4. Step 4: Simplify right side
    292,276.66x = 46,074,500,292.62
  5. Step 5: Solve for x
    x = 46,074,500,292.62/292,276.66
  6. Step 6: Final answer
    x = 157,640.03

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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.