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Finding the Fourth Proportional to 439,907.81, 607,070.63 and 238,703.81

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Solution

The fourth proportional to 439,907.81, 607,070.63 and 238,703.81 is: 329,410.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,907.81 : 607,070.63 = 238,703.81 : x
  2. Step 2: Convert to fraction form
    439,907.81/607,070.63 = 238,703.81/x
  3. Step 3: Cross multiply
    439,907.81x = 607,070.63 × 238,703.81
  4. Step 4: Simplify right side
    439,907.81x = 144,910,069,881.51
  5. Step 5: Solve for x
    x = 144,910,069,881.51/439,907.81
  6. Step 6: Final answer
    x = 329,410.09

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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.