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Finding the Fourth Proportional to 565,530.64, 848,288.55 and 139,070.15

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Solution

The fourth proportional to 565,530.64, 848,288.55 and 139,070.15 is: 208,603.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,530.64 : 848,288.55 = 139,070.15 : x
  2. Step 2: Convert to fraction form
    565,530.64/848,288.55 = 139,070.15/x
  3. Step 3: Cross multiply
    565,530.64x = 848,288.55 × 139,070.15
  4. Step 4: Simplify right side
    565,530.64x = 117,971,615,891.78
  5. Step 5: Solve for x
    x = 117,971,615,891.78/565,530.64
  6. Step 6: Final answer
    x = 208,603.40

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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.