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Finding the Fourth Proportional to 127,535.70, 191,303.55 and 104,985.30

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Solution

The fourth proportional to 127,535.70, 191,303.55 and 104,985.30 is: 157,477.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,535.70 : 191,303.55 = 104,985.30 : x
  2. Step 2: Convert to fraction form
    127,535.70/191,303.55 = 104,985.30/x
  3. Step 3: Cross multiply
    127,535.70x = 191,303.55 × 104,985.30
  4. Step 4: Simplify right side
    127,535.70x = 20,084,060,587.82
  5. Step 5: Solve for x
    x = 20,084,060,587.82/127,535.70
  6. Step 6: Final answer
    x = 157,477.95

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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.