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Finding the Fourth Proportional to 527,054.79, 727,335.45 and 285,337.20

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Solution

The fourth proportional to 527,054.79, 727,335.45 and 285,337.20 is: 393,765.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,054.79 : 727,335.45 = 285,337.20 : x
  2. Step 2: Convert to fraction form
    527,054.79/727,335.45 = 285,337.20/x
  3. Step 3: Cross multiply
    527,054.79x = 727,335.45 × 285,337.20
  4. Step 4: Simplify right side
    527,054.79x = 207,535,860,763.74
  5. Step 5: Solve for x
    x = 207,535,860,763.74/527,054.79
  6. Step 6: Final answer
    x = 393,765.25

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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.