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Finding the Fourth Proportional to 514,858.56, 710,548.56 and 288,547.80

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Solution

The fourth proportional to 514,858.56, 710,548.56 and 288,547.80 is: 398,220.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,858.56 : 710,548.56 = 288,547.80 : x
  2. Step 2: Convert to fraction form
    514,858.56/710,548.56 = 288,547.80/x
  3. Step 3: Cross multiply
    514,858.56x = 710,548.56 × 288,547.80
  4. Step 4: Simplify right side
    514,858.56x = 205,027,223,781.17
  5. Step 5: Solve for x
    x = 205,027,223,781.17/514,858.56
  6. Step 6: Final answer
    x = 398,220.48

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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.