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Finding the Fourth Proportional to 783,413, 1,081,440.63 and 529,108.64

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Solution

The fourth proportional to 783,413, 1,081,440.63 and 529,108.64 is: 730,393.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,413 : 1,081,440.63 = 529,108.64 : x
  2. Step 2: Convert to fraction form
    783,413/1,081,440.63 = 529,108.64/x
  3. Step 3: Cross multiply
    783,413x = 1,081,440.63 × 529,108.64
  4. Step 4: Simplify right side
    783,413x = 572,199,580,980.04
  5. Step 5: Solve for x
    x = 572,199,580,980.04/783,413
  6. Step 6: Final answer
    x = 730,393.27

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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.