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Finding the Fourth Proportional to 713,193.32, 984,230.57 and 390,904.23

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Solution

The fourth proportional to 713,193.32, 984,230.57 and 390,904.23 is: 539,460.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,193.32 : 984,230.57 = 390,904.23 : x
  2. Step 2: Convert to fraction form
    713,193.32/984,230.57 = 390,904.23/x
  3. Step 3: Cross multiply
    713,193.32x = 984,230.57 × 390,904.23
  4. Step 4: Simplify right side
    713,193.32x = 384,739,891,153.79
  5. Step 5: Solve for x
    x = 384,739,891,153.79/713,193.32
  6. Step 6: Final answer
    x = 539,460.88

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.