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Finding the Fourth Proportional to 438,317.66, 657,505.65 and 153,973.64

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Solution

The fourth proportional to 438,317.66, 657,505.65 and 153,973.64 is: 230,970.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,317.66 : 657,505.65 = 153,973.64 : x
  2. Step 2: Convert to fraction form
    438,317.66/657,505.65 = 153,973.64/x
  3. Step 3: Cross multiply
    438,317.66x = 657,505.65 × 153,973.64
  4. Step 4: Simplify right side
    438,317.66x = 101,238,538,251.07
  5. Step 5: Solve for x
    x = 101,238,538,251.07/438,317.66
  6. Step 6: Final answer
    x = 230,970.70

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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.