Home / 38,639,403.12-53,323,654.68-21,236,365.20

Finding the Fourth Proportional to 38,639,403.12, 53,323,654.68 and 21,236,365.20

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Solution

The fourth proportional to 38,639,403.12, 53,323,654.68 and 21,236,365.20 is: 29,306,886.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,639,403.12 : 53,323,654.68 = 21,236,365.20 : x
  2. Step 2: Convert to fraction form
    38,639,403.12/53,323,654.68 = 21,236,365.20/x
  3. Step 3: Cross multiply
    38,639,403.12x = 53,323,654.68 × 21,236,365.20
  4. Step 4: Simplify right side
    38,639,403.12x = 1,132,400,604,583,169
  5. Step 5: Solve for x
    x = 1,132,400,604,583,169/38,639,403.12
  6. Step 6: Final answer
    x = 29,306,886.58

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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.