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Finding the Fourth Proportional to 615,711.60, 921,817.80 and 545,727.60

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Solution

The fourth proportional to 615,711.60, 921,817.80 and 545,727.60 is: 817,040.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,711.60 : 921,817.80 = 545,727.60 : x
  2. Step 2: Convert to fraction form
    615,711.60/921,817.80 = 545,727.60/x
  3. Step 3: Cross multiply
    615,711.60x = 921,817.80 × 545,727.60
  4. Step 4: Simplify right side
    615,711.60x = 503,061,415,631.28
  5. Step 5: Solve for x
    x = 503,061,415,631.28/615,711.60
  6. Step 6: Final answer
    x = 817,040.67

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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.