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Finding the Fourth Proportional to 528,065.40, 791,514.90 and 291,577.80

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Solution

The fourth proportional to 528,065.40, 791,514.90 and 291,577.80 is: 437,044.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,065.40 : 791,514.90 = 291,577.80 : x
  2. Step 2: Convert to fraction form
    528,065.40/791,514.90 = 291,577.80/x
  3. Step 3: Cross multiply
    528,065.40x = 791,514.90 × 291,577.80
  4. Step 4: Simplify right side
    528,065.40x = 230,788,173,209.22
  5. Step 5: Solve for x
    x = 230,788,173,209.22/528,065.40
  6. Step 6: Final answer
    x = 437,044.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.