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Finding the Fourth Proportional to 630,413,641.80, 943,069,545.90 and 553,886,137.80

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Solution

The fourth proportional to 630,413,641.80, 943,069,545.90 and 553,886,137.80 is: 828,587,952.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,413,641.80 : 943,069,545.90 = 553,886,137.80 : x
  2. Step 2: Convert to fraction form
    630,413,641.80/943,069,545.90 = 553,886,137.80/x
  3. Step 3: Cross multiply
    630,413,641.80x = 943,069,545.90 × 553,886,137.80
  4. Step 4: Simplify right side
    630,413,641.80x = 522,353,148,455,350,784
  5. Step 5: Solve for x
    x = 522,353,148,455,350,784/630,413,641.80
  6. Step 6: Final answer
    x = 828,587,952.13

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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.