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Finding the Fourth Proportional to 615,541.80, 923,312.70 and 612,042.60

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Solution

The fourth proportional to 615,541.80, 923,312.70 and 612,042.60 is: 918,063.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,541.80 : 923,312.70 = 612,042.60 : x
  2. Step 2: Convert to fraction form
    615,541.80/923,312.70 = 612,042.60/x
  3. Step 3: Cross multiply
    615,541.80x = 923,312.70 × 612,042.60
  4. Step 4: Simplify right side
    615,541.80x = 565,106,705,521.02
  5. Step 5: Solve for x
    x = 565,106,705,521.02/615,541.80
  6. Step 6: Final answer
    x = 918,063.90

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Similar ratio
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1.5x scale

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.