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Finding the Fourth Proportional to 418,666.83, 577,974.74 and 283,416.27

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Solution

The fourth proportional to 418,666.83, 577,974.74 and 283,416.27 is: 391,259.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,666.83 : 577,974.74 = 283,416.27 : x
  2. Step 2: Convert to fraction form
    418,666.83/577,974.74 = 283,416.27/x
  3. Step 3: Cross multiply
    418,666.83x = 577,974.74 × 283,416.27
  4. Step 4: Simplify right side
    418,666.83x = 163,807,443,547.94
  5. Step 5: Solve for x
    x = 163,807,443,547.94/418,666.83
  6. Step 6: Final answer
    x = 391,259.66

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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.