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Finding the Fourth Proportional to 583,219.69, 874,829.54 and 139,987.69

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Solution

The fourth proportional to 583,219.69, 874,829.54 and 139,987.69 is: 209,981.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,219.69 : 874,829.54 = 139,987.69 : x
  2. Step 2: Convert to fraction form
    583,219.69/874,829.54 = 139,987.69/x
  3. Step 3: Cross multiply
    583,219.69x = 874,829.54 × 139,987.69
  4. Step 4: Simplify right side
    583,219.69x = 122,465,364,611.26
  5. Step 5: Solve for x
    x = 122,465,364,611.26/583,219.69
  6. Step 6: Final answer
    x = 209,981.53

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Half scale
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Double scale
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Similar ratio
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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.