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Finding the Fourth Proportional to 527,928.60, 791,892.90 and 520,055.40

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Solution

The fourth proportional to 527,928.60, 791,892.90 and 520,055.40 is: 780,083.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,928.60 : 791,892.90 = 520,055.40 : x
  2. Step 2: Convert to fraction form
    527,928.60/791,892.90 = 520,055.40/x
  3. Step 3: Cross multiply
    527,928.60x = 791,892.90 × 520,055.40
  4. Step 4: Simplify right side
    527,928.60x = 411,828,178,866.66
  5. Step 5: Solve for x
    x = 411,828,178,866.66/527,928.60
  6. Step 6: Final answer
    x = 780,083.10

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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.