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Finding the Fourth Proportional to 713,151.60, 984,104.60 and 390,838.83

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Solution

The fourth proportional to 713,151.60, 984,104.60 and 390,838.83 is: 539,333.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,151.60 : 984,104.60 = 390,838.83 : x
  2. Step 2: Convert to fraction form
    713,151.60/984,104.60 = 390,838.83/x
  3. Step 3: Cross multiply
    713,151.60x = 984,104.60 × 390,838.83
  4. Step 4: Simplify right side
    713,151.60x = 384,626,290,461.62
  5. Step 5: Solve for x
    x = 384,626,290,461.62/713,151.60
  6. Step 6: Final answer
    x = 539,333.14

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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.