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Finding the Fourth Proportional to 292,432.64, 438,645.12 and 92,752.64

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Solution

The fourth proportional to 292,432.64, 438,645.12 and 92,752.64 is: 139,127.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,432.64 : 438,645.12 = 92,752.64 : x
  2. Step 2: Convert to fraction form
    292,432.64/438,645.12 = 92,752.64/x
  3. Step 3: Cross multiply
    292,432.64x = 438,645.12 × 92,752.64
  4. Step 4: Simplify right side
    292,432.64x = 40,685,492,903.12
  5. Step 5: Solve for x
    x = 40,685,492,903.12/292,432.64
  6. Step 6: Final answer
    x = 139,127.74

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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.