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Finding the Fourth Proportional to 692,697.64, 955,913.38 and 386,778.76

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Solution

The fourth proportional to 692,697.64, 955,913.38 and 386,778.76 is: 533,749.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,697.64 : 955,913.38 = 386,778.76 : x
  2. Step 2: Convert to fraction form
    692,697.64/955,913.38 = 386,778.76/x
  3. Step 3: Cross multiply
    692,697.64x = 955,913.38 × 386,778.76
  4. Step 4: Simplify right side
    692,697.64x = 369,726,991,783.81
  5. Step 5: Solve for x
    x = 369,726,991,783.81/692,697.64
  6. Step 6: Final answer
    x = 533,749.46

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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.