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Finding the Fourth Proportional to 153,887.40, 230,831.10 and 83,730.60

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Solution

The fourth proportional to 153,887.40, 230,831.10 and 83,730.60 is: 125,595.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,887.40 : 230,831.10 = 83,730.60 : x
  2. Step 2: Convert to fraction form
    153,887.40/230,831.10 = 83,730.60/x
  3. Step 3: Cross multiply
    153,887.40x = 230,831.10 × 83,730.60
  4. Step 4: Simplify right side
    153,887.40x = 19,327,626,501.66
  5. Step 5: Solve for x
    x = 19,327,626,501.66/153,887.40
  6. Step 6: Final answer
    x = 125,595.90

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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.