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Finding the Fourth Proportional to 653,587.61, 902,051.04 and 399,087.77

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Solution

The fourth proportional to 653,587.61, 902,051.04 and 399,087.77 is: 550,802.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,587.61 : 902,051.04 = 399,087.77 : x
  2. Step 2: Convert to fraction form
    653,587.61/902,051.04 = 399,087.77/x
  3. Step 3: Cross multiply
    653,587.61x = 902,051.04 × 399,087.77
  4. Step 4: Simplify right side
    653,587.61x = 359,997,533,469.53
  5. Step 5: Solve for x
    x = 359,997,533,469.53/653,587.61
  6. Step 6: Final answer
    x = 550,802.27

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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.