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Finding the Fourth Proportional to 438,097.68, 604,579.14 and 256,916.88

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Solution

The fourth proportional to 438,097.68, 604,579.14 and 256,916.88 is: 354,547.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,097.68 : 604,579.14 = 256,916.88 : x
  2. Step 2: Convert to fraction form
    438,097.68/604,579.14 = 256,916.88/x
  3. Step 3: Cross multiply
    438,097.68x = 604,579.14 × 256,916.88
  4. Step 4: Simplify right side
    438,097.68x = 155,326,586,361.88
  5. Step 5: Solve for x
    x = 155,326,586,361.88/438,097.68
  6. Step 6: Final answer
    x = 354,547.84

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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.