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Finding the Fourth Proportional to 526,218.30, 788,809.05 and 260,019.90

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Solution

The fourth proportional to 526,218.30, 788,809.05 and 260,019.90 is: 389,773.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,218.30 : 788,809.05 = 260,019.90 : x
  2. Step 2: Convert to fraction form
    526,218.30/788,809.05 = 260,019.90/x
  3. Step 3: Cross multiply
    526,218.30x = 788,809.05 × 260,019.90
  4. Step 4: Simplify right side
    526,218.30x = 205,106,050,300.10
  5. Step 5: Solve for x
    x = 205,106,050,300.10/526,218.30
  6. Step 6: Final answer
    x = 389,773.69

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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.