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Finding the Fourth Proportional to 528,599.70, 791,279.55 and 291,215.70

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Solution

The fourth proportional to 528,599.70, 791,279.55 and 291,215.70 is: 435,931.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,599.70 : 791,279.55 = 291,215.70 : x
  2. Step 2: Convert to fraction form
    528,599.70/791,279.55 = 291,215.70/x
  3. Step 3: Cross multiply
    528,599.70x = 791,279.55 × 291,215.70
  4. Step 4: Simplify right side
    528,599.70x = 230,433,028,048.94
  5. Step 5: Solve for x
    x = 230,433,028,048.94/528,599.70
  6. Step 6: Final answer
    x = 435,931.06

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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.