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Finding the Fourth Proportional to 527,985.60, 728,616.63 and 286,267.42

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Solution

The fourth proportional to 527,985.60, 728,616.63 and 286,267.42 is: 395,047.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,985.60 : 728,616.63 = 286,267.42 : x
  2. Step 2: Convert to fraction form
    527,985.60/728,616.63 = 286,267.42/x
  3. Step 3: Cross multiply
    527,985.60x = 728,616.63 × 286,267.42
  4. Step 4: Simplify right side
    527,985.60x = 208,579,202,839.20
  5. Step 5: Solve for x
    x = 208,579,202,839.20/527,985.60
  6. Step 6: Final answer
    x = 395,047.14

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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.