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Finding the Fourth Proportional to 527,894.60, 791,841.90 and 520,021.40

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Solution

The fourth proportional to 527,894.60, 791,841.90 and 520,021.40 is: 780,032.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,894.60 : 791,841.90 = 520,021.40 : x
  2. Step 2: Convert to fraction form
    527,894.60/791,841.90 = 520,021.40/x
  3. Step 3: Cross multiply
    527,894.60x = 791,841.90 × 520,021.40
  4. Step 4: Simplify right side
    527,894.60x = 411,774,733,416.66
  5. Step 5: Solve for x
    x = 411,774,733,416.66/527,894.60
  6. Step 6: Final answer
    x = 780,032.10

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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.