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Finding the Fourth Proportional to 577,277.70, 865,916.55 and 553,658.10

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Solution

The fourth proportional to 577,277.70, 865,916.55 and 553,658.10 is: 830,487.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,277.70 : 865,916.55 = 553,658.10 : x
  2. Step 2: Convert to fraction form
    577,277.70/865,916.55 = 553,658.10/x
  3. Step 3: Cross multiply
    577,277.70x = 865,916.55 × 553,658.10
  4. Step 4: Simplify right side
    577,277.70x = 479,421,711,831.56
  5. Step 5: Solve for x
    x = 479,421,711,831.56/577,277.70
  6. Step 6: Final answer
    x = 830,487.15

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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.