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Finding the Fourth Proportional to 567,118.76, 781,547.62 and 405,693.88

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Solution

The fourth proportional to 567,118.76, 781,547.62 and 405,693.88 is: 559,087.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,118.76 : 781,547.62 = 405,693.88 : x
  2. Step 2: Convert to fraction form
    567,118.76/781,547.62 = 405,693.88/x
  3. Step 3: Cross multiply
    567,118.76x = 781,547.62 × 405,693.88
  4. Step 4: Simplify right side
    567,118.76x = 317,069,086,362.57
  5. Step 5: Solve for x
    x = 317,069,086,362.57/567,118.76
  6. Step 6: Final answer
    x = 559,087.64

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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.