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Finding the Fourth Proportional to 569,765.23, 786,518.12 and 355,011.40

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Solution

The fourth proportional to 569,765.23, 786,518.12 and 355,011.40 is: 490,066.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,765.23 : 786,518.12 = 355,011.40 : x
  2. Step 2: Convert to fraction form
    569,765.23/786,518.12 = 355,011.40/x
  3. Step 3: Cross multiply
    569,765.23x = 786,518.12 × 355,011.40
  4. Step 4: Simplify right side
    569,765.23x = 279,222,895,165.22
  5. Step 5: Solve for x
    x = 279,222,895,165.22/569,765.23
  6. Step 6: Final answer
    x = 490,066.58

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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.