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Finding the Fourth Proportional to 495,329.80, 742,994.70 and 492,219.40

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Solution

The fourth proportional to 495,329.80, 742,994.70 and 492,219.40 is: 738,329.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,329.80 : 742,994.70 = 492,219.40 : x
  2. Step 2: Convert to fraction form
    495,329.80/742,994.70 = 492,219.40/x
  3. Step 3: Cross multiply
    495,329.80x = 742,994.70 × 492,219.40
  4. Step 4: Simplify right side
    495,329.80x = 365,716,405,437.18
  5. Step 5: Solve for x
    x = 365,716,405,437.18/495,329.80
  6. Step 6: Final answer
    x = 738,329.10

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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.