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Finding the Fourth Proportional to 201,999.18, 278,762.40 and 111,354.60

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Solution

The fourth proportional to 201,999.18, 278,762.40 and 111,354.60 is: 153,671.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,999.18 : 278,762.40 = 111,354.60 : x
  2. Step 2: Convert to fraction form
    201,999.18/278,762.40 = 111,354.60/x
  3. Step 3: Cross multiply
    201,999.18x = 278,762.40 × 111,354.60
  4. Step 4: Simplify right side
    201,999.18x = 31,041,475,547.04
  5. Step 5: Solve for x
    x = 31,041,475,547.04/201,999.18
  6. Step 6: Final answer
    x = 153,671.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.