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Finding the Fourth Proportional to 514,582.50, 710,113.25 and 285,137.79

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Solution

The fourth proportional to 514,582.50, 710,113.25 and 285,137.79 is: 393,484.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,582.50 : 710,113.25 = 285,137.79 : x
  2. Step 2: Convert to fraction form
    514,582.50/710,113.25 = 285,137.79/x
  3. Step 3: Cross multiply
    514,582.50x = 710,113.25 × 285,137.79
  4. Step 4: Simplify right side
    514,582.50x = 202,480,121,329.03
  5. Step 5: Solve for x
    x = 202,480,121,329.03/514,582.50
  6. Step 6: Final answer
    x = 393,484.27

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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.