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Finding the Fourth Proportional to 465,875.40, 699,338.70 and 308,411.40

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Solution

The fourth proportional to 465,875.40, 699,338.70 and 308,411.40 is: 462,965.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,875.40 : 699,338.70 = 308,411.40 : x
  2. Step 2: Convert to fraction form
    465,875.40/699,338.70 = 308,411.40/x
  3. Step 3: Cross multiply
    465,875.40x = 699,338.70 × 308,411.40
  4. Step 4: Simplify right side
    465,875.40x = 215,684,027,541.18
  5. Step 5: Solve for x
    x = 215,684,027,541.18/465,875.40
  6. Step 6: Final answer
    x = 462,965.05

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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.