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Finding the Fourth Proportional to 710,641.22, 980,369.88 and 423,994.64

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Solution

The fourth proportional to 710,641.22, 980,369.88 and 423,994.64 is: 584,924.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,641.22 : 980,369.88 = 423,994.64 : x
  2. Step 2: Convert to fraction form
    710,641.22/980,369.88 = 423,994.64/x
  3. Step 3: Cross multiply
    710,641.22x = 980,369.88 × 423,994.64
  4. Step 4: Simplify right side
    710,641.22x = 415,671,574,337.44
  5. Step 5: Solve for x
    x = 415,671,574,337.44/710,641.22
  6. Step 6: Final answer
    x = 584,924.66

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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.