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Finding the Fourth Proportional to 583,421.40, 875,067.30 and 478,056.60

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Solution

The fourth proportional to 583,421.40, 875,067.30 and 478,056.60 is: 717,031.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,421.40 : 875,067.30 = 478,056.60 : x
  2. Step 2: Convert to fraction form
    583,421.40/875,067.30 = 478,056.60/x
  3. Step 3: Cross multiply
    583,421.40x = 875,067.30 × 478,056.60
  4. Step 4: Simplify right side
    583,421.40x = 418,331,698,209.18
  5. Step 5: Solve for x
    x = 418,331,698,209.18/583,421.40
  6. Step 6: Final answer
    x = 717,031.80

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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.