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Finding the Fourth Proportional to 505,165.32, 697,124.64 and 278,810.76

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Solution

The fourth proportional to 505,165.32, 697,124.64 and 278,810.76 is: 384,756.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,165.32 : 697,124.64 = 278,810.76 : x
  2. Step 2: Convert to fraction form
    505,165.32/697,124.64 = 278,810.76/x
  3. Step 3: Cross multiply
    505,165.32x = 697,124.64 × 278,810.76
  4. Step 4: Simplify right side
    505,165.32x = 194,365,850,693.13
  5. Step 5: Solve for x
    x = 194,365,850,693.13/505,165.32
  6. Step 6: Final answer
    x = 384,756.92

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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.