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Finding the Fourth Proportional to 614,538.20, 921,807.30 and 572,547.80

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Solution

The fourth proportional to 614,538.20, 921,807.30 and 572,547.80 is: 858,821.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,538.20 : 921,807.30 = 572,547.80 : x
  2. Step 2: Convert to fraction form
    614,538.20/921,807.30 = 572,547.80/x
  3. Step 3: Cross multiply
    614,538.20x = 921,807.30 × 572,547.80
  4. Step 4: Simplify right side
    614,538.20x = 527,778,741,638.94
  5. Step 5: Solve for x
    x = 527,778,741,638.94/614,538.20
  6. Step 6: Final answer
    x = 858,821.70

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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.