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Finding the Fourth Proportional to 521,411.25, 719,547.53 and 282,947.25

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Solution

The fourth proportional to 521,411.25, 719,547.53 and 282,947.25 is: 390,467.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,411.25 : 719,547.53 = 282,947.25 : x
  2. Step 2: Convert to fraction form
    521,411.25/719,547.53 = 282,947.25/x
  3. Step 3: Cross multiply
    521,411.25x = 719,547.53 × 282,947.25
  4. Step 4: Simplify right side
    521,411.25x = 203,593,993,443.06
  5. Step 5: Solve for x
    x = 203,593,993,443.06/521,411.25
  6. Step 6: Final answer
    x = 390,467.21

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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.