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Finding the Fourth Proportional to 520,032.90, 778,737.15 and 415,056.90

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Solution

The fourth proportional to 520,032.90, 778,737.15 and 415,056.90 is: 621,538.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,032.90 : 778,737.15 = 415,056.90 : x
  2. Step 2: Convert to fraction form
    520,032.90/778,737.15 = 415,056.90/x
  3. Step 3: Cross multiply
    520,032.90x = 778,737.15 × 415,056.90
  4. Step 4: Simplify right side
    520,032.90x = 323,220,227,393.84
  5. Step 5: Solve for x
    x = 323,220,227,393.84/520,032.90
  6. Step 6: Final answer
    x = 621,538.04

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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.