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Finding the Fourth Proportional to 891,893.34, 1,230,730.74 and 529,254.72

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Solution

The fourth proportional to 891,893.34, 1,230,730.74 and 529,254.72 is: 730,322.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,893.34 : 1,230,730.74 = 529,254.72 : x
  2. Step 2: Convert to fraction form
    891,893.34/1,230,730.74 = 529,254.72/x
  3. Step 3: Cross multiply
    891,893.34x = 1,230,730.74 × 529,254.72
  4. Step 4: Simplify right side
    891,893.34x = 651,370,053,194.09
  5. Step 5: Solve for x
    x = 651,370,053,194.09/891,893.34
  6. Step 6: Final answer
    x = 730,322.81

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.