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Finding the Fourth Proportional to 693,656.16, 957,347.12 and 407,332.96

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Solution

The fourth proportional to 693,656.16, 957,347.12 and 407,332.96 is: 562,179.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,656.16 : 957,347.12 = 407,332.96 : x
  2. Step 2: Convert to fraction form
    693,656.16/957,347.12 = 407,332.96/x
  3. Step 3: Cross multiply
    693,656.16x = 957,347.12 × 407,332.96
  4. Step 4: Simplify right side
    693,656.16x = 389,959,036,137.08
  5. Step 5: Solve for x
    x = 389,959,036,137.08/693,656.16
  6. Step 6: Final answer
    x = 562,179.16

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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.