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Finding the Fourth Proportional to 530,133.54, 731,587.47 and 288,417.85

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Solution

The fourth proportional to 530,133.54, 731,587.47 and 288,417.85 is: 398,018.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,133.54 : 731,587.47 = 288,417.85 : x
  2. Step 2: Convert to fraction form
    530,133.54/731,587.47 = 288,417.85/x
  3. Step 3: Cross multiply
    530,133.54x = 731,587.47 × 288,417.85
  4. Step 4: Simplify right side
    530,133.54x = 211,002,885,184.34
  5. Step 5: Solve for x
    x = 211,002,885,184.34/530,133.54
  6. Step 6: Final answer
    x = 398,018.37

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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.