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Finding the Fourth Proportional to 572,078.10, 858,117.15 and 545,834.10

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Solution

The fourth proportional to 572,078.10, 858,117.15 and 545,834.10 is: 818,751.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,078.10 : 858,117.15 = 545,834.10 : x
  2. Step 2: Convert to fraction form
    572,078.10/858,117.15 = 545,834.10/x
  3. Step 3: Cross multiply
    572,078.10x = 858,117.15 × 545,834.10
  4. Step 4: Simplify right side
    572,078.10x = 468,389,602,264.82
  5. Step 5: Solve for x
    x = 468,389,602,264.82/572,078.10
  6. Step 6: Final answer
    x = 818,751.15

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Double scale
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Similar ratio
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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.