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Finding the Fourth Proportional to 693,216.63, 956,621.34 and 387,295.32

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Solution

The fourth proportional to 693,216.63, 956,621.34 and 387,295.32 is: 534,457.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,216.63 : 956,621.34 = 387,295.32 : x
  2. Step 2: Convert to fraction form
    693,216.63/956,621.34 = 387,295.32/x
  3. Step 3: Cross multiply
    693,216.63x = 956,621.34 × 387,295.32
  4. Step 4: Simplify right side
    693,216.63x = 370,494,967,994.13
  5. Step 5: Solve for x
    x = 370,494,967,994.13/693,216.63
  6. Step 6: Final answer
    x = 534,457.70

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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.