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Finding the Fourth Proportional to 52,398.32, 78,597.48 and 12,955.78

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Solution

The fourth proportional to 52,398.32, 78,597.48 and 12,955.78 is: 19,433.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,398.32 : 78,597.48 = 12,955.78 : x
  2. Step 2: Convert to fraction form
    52,398.32/78,597.48 = 12,955.78/x
  3. Step 3: Cross multiply
    52,398.32x = 78,597.48 × 12,955.78
  4. Step 4: Simplify right side
    52,398.32x = 1,018,291,201.67
  5. Step 5: Solve for x
    x = 1,018,291,201.67/52,398.32
  6. Step 6: Final answer
    x = 19,433.66

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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.