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Finding the Fourth Proportional to 398,333.90, 549,536.20 and 277,545.22

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Solution

The fourth proportional to 398,333.90, 549,536.20 and 277,545.22 is: 382,897.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,333.90 : 549,536.20 = 277,545.22 : x
  2. Step 2: Convert to fraction form
    398,333.90/549,536.20 = 277,545.22/x
  3. Step 3: Cross multiply
    398,333.90x = 549,536.20 × 277,545.22
  4. Step 4: Simplify right side
    398,333.90x = 152,521,143,459.26
  5. Step 5: Solve for x
    x = 152,521,143,459.26/398,333.90
  6. Step 6: Final answer
    x = 382,897.72

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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.