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Finding the Fourth Proportional to 519,117.80, 778,895.40 and 282,630.20

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Solution

The fourth proportional to 519,117.80, 778,895.40 and 282,630.20 is: 424,064.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,117.80 : 778,895.40 = 282,630.20 : x
  2. Step 2: Convert to fraction form
    519,117.80/778,895.40 = 282,630.20/x
  3. Step 3: Cross multiply
    519,117.80x = 778,895.40 × 282,630.20
  4. Step 4: Simplify right side
    519,117.80x = 220,139,362,681.08
  5. Step 5: Solve for x
    x = 220,139,362,681.08/519,117.80
  6. Step 6: Final answer
    x = 424,064.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.